MATH 225N Week 8 Assignment Linear Regression Equations
- Question: An avid lover is … about the lack of daffodils that grow in their backyard. They find the growth of the daffodils, G, is dependent on the percent of aluminum … in the soil, X, and can … but the function G(x) = 16 – 4x. Draw the graph of the growth by plotting its G – Intercept and another point.
- Question: What percent of aluminum in the soil must there be for the daffodils to grow only by 5 centimeters? Round your final answer to the nearest whole number.
- Question: A baker, keeps track of the amount of time they spend baking and the number of pies they are able to bake in that time. The data are shown in the table below……. Which of the scatter plots below accurately records the data?
- Question: A basketball player keeps track of the amount of time they practice their three-point shot in basketball each week and the number of three-point shots they score in the game that week. The data are shown in the table below, which of the scatter plots below accurately records the data?
- Question: Ryan owns a snow shoveling business. For each driveway, they charges $50 plus $70 per hour of work. A linear equation that expresses the total amount of money Ryan earns per driveway is y = 70x + 50. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: Jaq owns a lawn mowing service. For each lawn, they charges $85 plus $20 per hour of work. A linear equation that expresses the total amount of money Jaq earns per lawn is y = 85 + 20x. What are the independent and dependent variables? What is the y-intercept and the slope?
MATH 225N Week 8 Assignment Linear Regression Equations
- Question: Olivia keeps track of the amount of time she works on homework each week and the number of problems she is able to solve. The data are shown in the table below. Which of the scatter plots below accurately records the data?
- Question: The scatter plot below shows data relating total income and the number of children a family has. Which of the following patterns does the scatter plot show?
- Question: Rosetta owns a wedding photography business. For each wedding, she charges $100 plus $50 per hour of work. A linear equation that expresses the total amount of money Rosetta earns per wedding is y=50x+100. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: Lexie owns a lawn mowing service. For each lawn, she charges $85 plus $20 per hour of work. A linear equation that expresses the total amount of money Lexie earns per lawn is y=85+20x. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: Which of the following lines has a negative slope? Select all correct answers.
- Question: Which of the following are linear equations? Select all correct answers.
- Question: Ethan repairs household appliances like dishwashers and refrigerators. For each visit, he charges $25 plus $20 per hour of A linear equation that expresses the total amount of money Ethan earns per visit is y=25+20x. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: Alice owns a snow shoveling business. For each driveway, she charges $50 plus $70 per hour of work. A linear equation that expresses the total amount of money Alice earns per driveway is y=70x+50. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: Find the graphs below which have a positive slope. Select all correct answers
- Question: Which of the following lines has slope zero? Select all correct answers.
- Question: The scatter plot below shows data relating competitive chess players’ ratings and their IQ. Which of the following patterns does the scatter plot show?
- Question: The scatter plot below shows data relating competitive chess players’ ratings and their IQ. Which of the following patterns does the scatter plot show?
- Question: Horace keeps track of the amount of time he spends practicing his tennis serve and the number of aces he gets in his match each week. The data are shown in the table Which of the scatter plots below accurately records the data?
- Question: An owner of multiple online clothing stores … the relationship between the percent of on-call service representatives and the percent of purchases over $75 at the same stores. The owner collects information from 6 of their online stores, shown in the table below. Use the graph below to plot the points and develop a linear relationship between the percent of on-call service representatives and the percent of purchases over $75.
- Question: Using the linear relationship … above, estimate the percent of over $75 purchases if there are 40% on-call service representatives.
MATH 225N Week 8 Assignment Linear Regression Equations
- Question: Annie owns a tutoring service. For each tutoring session, she charges $75 plus $35 per hour of work. A linear equation that expresses the total amount of money Annie earns per tutoring session is y=75+35x. What are the independent and dependent variables? What is the y-intercept and the slope?
- Question: George is an avid plant lover and is … about the lack of daffodils that grow in his backyard. He finds the growth of the daffodils, G, is dependent on the percent of aluminum … in the soil, x, and can … by the function …. G(x)=16−4x….. Draw the graph of the growth function by plotting its G-intercept and another point….. So, (7,−12)is another point on the graph of G(x).
- Question: What percent of aluminum in the soil must there be for the daffodils to grow only by 5centimeters? …. Round your final answer to the nearest whole number….. 03 percent$3\ \text{percent}$3 percent
- Question: The scatter plot below shows data relating competitive chess players’ ratings and their IQ. Which of the following patterns does the scatter plot show?
- Question: The scatter plot below shows data relating total income and the number of children a family has. Which of the following patterns does the scatter plot show?
- Question: The number of questions … incorrect on a statistics midterm, y, is dependent on the pages of notes a student wrote over the semester, x, and can … by the function y(x)=30−3.5x….. Draw the graph of the function by plotting its y-intercept and another point.
- Question: How many pages of notes did a student take if they had 12 problems … incorrect on the statistics midterm?
- Question: A shoe designer … the relationship between the percent of defects and the percent of new machines at various production facilities throughout the state. The designer collects information from 6 of their facilities, shown in the table below.
- Question: Using the linear relationship … above, estimate the percent of new machines if there is12% defects in the shoes at various production facilities.
- Question: A department store manager … the relationship between the percent of customers that wait more than 7 minutes in line and the percent of customers that purchase last minute items at checkout. The manager collects information from 5 checkout lines, shown in the table below….. Use the graph below to plot the points and develop a linear relationship between the percent of waiting customers and the percent of last minute purchases.
- Question: Using the linear relationship … above, estimate the percent of last minute purchases if 40% of the customers wait more than 7 minutes in line.
- Question: A government agency … the relationship between the percent of public colleges and the percent of freshmen that stay home during college. The researcher collects information from 5 states, shown in the table below….. Use the graph below to plot the points and develop a linear relationship between the percent of public colleges and the percent of freshmen that stay home during college.
- Question: … the linear relationship … above, estimate the percent of freshmen that stay in-state if there are 45% public colleges
- Question: Describe the relationship between the independent variable, x, and the dependent variable, y, if the correlation is positive.
- Question: … of the following patterns does the scatter plot show?
- Question: Horace keeps track of the amount of time he studies and the score he gets on his quiz. The data are … in the table below. Which of the scatter plots below accurately records the data?
- Question: An owner of multiple online clothing stores … the relationship between the percent of on-call service representatives and the percent of purchases over $75 at the same stores. The owner collects information from 6 of their online stores, shown in the table below….. Use the graph below to plot the points and develop a linear relationship between the percent of on-call service representatives and the percent of purchases over $75.
- Question: Using the linear relationship … above, estimate the percent of over $75 purchases if there are 40% on-call service representatives.
