Badge Quiz 7.10 Functions

Jake washes cars. The table represents the cars washed (x) and the money earned (y). What is the rate of change (slope) of Jake's earnings?

• 3

• ⅕

• 5

• 9

Sara sells lemonade at her lemonade stand. The cups sold and money she earned is represented in the table. Which equation represents how much money Sara earns (y) each day.

• y=x+6

• y=0.75x

• y=1.5x

• y=x-2

Kyle mows lawns for several days. He charges $12 per lawn. Let x represent the number of lawns Kyle mows. Let y represent the total amount Kyle earns. Which equation represents the situation?

• y=x-12

• y=x+12

• y=12x

• y=x/12

Choose all that are true about this graph.

• The slope is 3.

• The slope is ⅓.

• A point on this graph is (3,1).

• A point on this graph is (-1,-3)

• The y-intercept is 3.

Choose all that are true.

• A point on this line is (1,2)

• y=x+1

• y=x

• y= ½x

• A point on this line is (-4,-2)

Select all points that lie on the graph of line y=¼x.

• (4,1)

• (0,1)

• (-8,2)

• (0,0)

• (-8,-2)

Which of the following graphs represents the equation y=4x?

• 
• 
• 
• 

The table shows the relationship between x and y. What is the y-intercept, of the line passing through these points?

• 4

• 1

• 3

• 0

1. A line contains the points represented by this table of values. What is y-intercept, of the line passing through these points?

• (-7,0)

• (0,7)

• (7,0)

• (0,-7)

Alex and Dave sell donuts. Alex earns $11 more than Dave.

· Let x represent the number of donuts Dave sells.

· Let y represent the total amount of donuts Alex sells.

Which equation represents how much Alex earns selling donuts.

• y=11x

• y=x+11

• y=x-11

• y=5.5x