Direct Variations Practice

What does the Direct Variation Equation look like?

• y = kx

• y = mx + b

• y = b

• y = x

Is this a direct variation?

• Yes, it is in y=kx form & k=2

• No, it is not in y=kx form

• Yes, it is not in y=kx form

• No, it is in y=kx form & k=2

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

• 88/3

• 28

• 66/4

• 24

Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

• 4/5

• 17

• 16

• 25

The value of y varies directly with x.  Which function represents the relationship between x and y if y = 14 when x = 6. 

• y=20x

• y=84x

• y=7/3x

• y=3/7x

If m varies directly as p, and m = 35 when p = 5, find m when p is 6.

• 42

• 36

• 25

• 49

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26

• 3

• 58.5

• 2

Is this a direct variation?

• yes

• no