7th Grade Math

Test PracticeT

8. CHALLENGE Flavio is saving money at a rate of $30 per month. Edgardo
   is saving money at a rate of $35 per month. They both started saving at
   the same time. If you were to create a table of values and graph each
   function, what would be the slope of each graph?


9. FIND THE ERROR Marisol is finding the slope of the line containing the
   points (3, 7) and (5, 10). Find her mistake and correct it.

The slope between the two

points (3, 7) and (5, 10) is

found like this:

slope = _rise

run

= _^5 –^3

10 – 7

= _^23

10. E WRITE MATH Describe the relationship between the rate of change
    and the slope. How do you find each?


11. SHORT RESPONSE Find the slope of
    the line below that shows the distance
    Jairo traveled while jogging.

Distance (ft)

15

20

25

30

10

5

0 12345 6 7

Time (s)

(3, 12)

(5, 20)

(1, 4)

Jairo’s Jogging Time

12. Line RS represents a bike ramp.
    y

0 x

• 
  

  4

  
  


• 
  

  6

  
  


• 
  

  8

  
  


• 
  

  8 - 6 - 4 - (^22846)
  2
  4
  6
  8
  3
  4
  What is the slope of the ramp?
  A. - ^3
  1
  C. ^1
  3
  B. - ^1
  3
  D. ^3
  1

  
  

13. WAGES Use the information in the table to find the constant Wage ($) 0 9 18 27
    rate of change in dollars per hour. (Lesson 2B) Time (h) 0123


14. Graph y = 4 x.(Lesson 1C)

C

Lesson 2C Slope 399

391_400_C07_L2_895130.indd 399 12/31/09 4:26 PM