Function and Scatterplot Review

Which equation can be used to describe the relationship between x and y in the graph?

• y = 3x +2

• y = -3x - 6

• y = 3x - 6

• y = 3x +2

Find the slope and y-intercept from the table.

• slope = 1/25, y-intercept 15

• slope = -1/25, y-intercept 15

• slope = -25, y-intercept 15

How much profit does she make per box? 

• $10 per box

• $7.50 per box

• $30 per box

Write an equation that represents the relationship in the table.

• y = 50x + 200

• y = 200x + 50

• y = 250x

• y = 50x

What is the y-intercept of the graph

• -6

• -9

• -18

• 18

What is the slope and y-intercept? 

• slope = 1/4 y-intercept = 1.5

• slope = 4 y-intercept = -1.5

• slope = -1/4 y-intercept = -1.5

• slope = -4 y-intercept = -1.5

Based on the graph, what is the best prediction for 7 people?

• $240

• $190

• $210

• $300

Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week if that person spends an average of 10 hours on recreational activities every week?

• 33 hours

• 85 hours

• 50 hours

• 65 hours

Based on this scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant.

• $135

• $115

• $105

• $150

Based on the scatterplot, what is the best prediction of a person's average typing speed in words per minute (wpm) if the person has spent 70 hours learning to type?

• 100

• 55

• 85

• 70