Linear Approximation

Which scatterplot could have a trend line with an equation of y=x+5?

• 
• 
• 
• 

Which graph would have a trend line of y=-2x+5?

• 
• 
• 
• 

Tags

CCSS.8.EE.B.5

A graph of a set of data points is shown. The trend line for the data is shown on the grid. Using the trend line, what is the best prediction of the value of y when x=18?

• 9

• 13

• 15

• 17

The graph shows the average number of hours 10 basketball players practiced weekly and the average number of free throws the players made during the season. Using the trend line, if another member of the team practiced an average of 14 hours a week, what is a good prediction of the number of free throws he would make?

• 6

• 10

• 8

• 11

Herbie is saving money to buy himself a new computer. He had $75 saved when he decided to add money to the savings account each month. The graph shows the amount of money Herbie had in his account. Using the trend line, which is the best prediction for the number of months it will take Herbie to have $400 in his account?

• 11

• 15

• 18

• 13

Tags

CCSS.HSF.LE.B.5

Mr. Dillon graphed a scatter plot of the number of hours he drove (h) and the number of miles he traveled (d). He then found a trend line of his data to be d=51h+2. What is the predicted distance Mr. Dillon will travel if he drives 6 hours?

• 350 miles

• 275 miles

• 290 miles

• 308 miles

If a set of data points has a trend line of y=4.2x-3, what is the predicted value of x when y=5.4?

• 3

• 5

• 2

• 1.5

The graph shows the number of students who wore shorts to school at different temperatures. If 200 students wore shorts to school, which is the best prediction of the temperature?

• 88 degrees

• 83 degrees

• 86 degrees

• 90 degrees

Look at the two graphs. Jamie predicted that when x=12 then y=16. Which graph was janie using to make the prediction?

• Only Graph C

• Only Graph D

• Both Graph C and Graph D

• Neither Graph C nor Graph D

Look at the two graphs. Which scatter plot could have a trend line whose equation is y=2x+1?

• Only Graph 1

• Only Graph 2

• Both Graph 1 and Graph 2

• Neither Graph 1 nor Graph 2

Tags

CCSS.8.EE.B.5