

1. 
If y varies directly as x and y = 21 when x = 5, find x when y = 42. 


A. 
21 
B. 
4.2 


C. 
5 
D. 
10 


Hint 


2. 
Jim's wages vary directly as the numbers of hours he works. For 7 hours, he makes $38.85. How much will he make in 37 hours? 


A. 
$205.35 
B. 
$207.20 


C. 
$194.25 
D. 
$1437.45 


Hint 


3. 
Suppose y varies directly as x, and y = 319 when x = 29. Write a direct variation equation that relates x and y. 


A. 

B. 
y = 11x 


C. 
y = 11x 
D. 



Hint 


4. 
Suppose y varies directly as x, and y = 65 when x = 26. Write a direct variation equation that relates x and y. 


A. 

B. 



C. 

D. 



Hint 


5. 
Use the direct variation equation y = 22x to find x when y = 88. 


A. 

B. 



C. 
x = 4 
D. 
x = 4 


Hint 


