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

Quiz
•
Mathematics
•
7th - 9th Grade
•
Hard
Barbara White
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4/5
17
16
25
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
n varies directly with c. If c = 24 when n = 18, what is c when n = 22?
88/3
28
66/4
24
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which equation exhibits a direct proportion?
y = 5x - 2
y = 3/4 x
y - x = 4
x = 6
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which equation is not an example of direct proportion?
y = x
y = 3x
y = - 6x
y = 2/3 x + 5
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the value of k in the following equation? y = 2/7 x
4
-4
2/7
7
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
For an equation to be directly proportional, it must .......
pass thru two points
pass thru the origin
be positive
not have a fraction
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Upon seeing, "y varies directly as x" we immediately.....
write down what x and y are
write down what k is equal to
substitute into the equation
write y = kx
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