
DIRECT VARIATION
Quiz by Roselyn Arbitrario
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- Q1
In a direct variation, y=39 when x=3. Find the value of y when x=2.
3
2
58.5
26
60s - Q2
Write an equation for this relationship.
y=32x
y=16x
y = 1/4 x
y=2x
30s - Q3
Y varies directly with x, and y is 80 when x is 16. Which equation represents this situation?
y=5x
y=1344x
y=4/21x
y=100x
30s - Q4
If y = 15 when x = 12, find y when x = 32.
y=5
y = 40
y=-40
y=-5
30s - Q5
If y =4 when x = -4, find y when x =7.
y=7
y=3
y=-7
y=-3
30s - Q6
What does the Direct Variation Equation look like?
y = b
y = x
y = kx
y = mx+b
30s - Q7
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?
k = 5
k = 1/13
k = 65
k = 13
30s - Q8
If y varies directly with x and y= 12 when x= 15. What is the value of x when y= 16?
11.25
20
19
12.8
30s - Q9
if y is directly proportional to x, y is 10 when x is 5. What is the value of y when x is 9?
18
1.5
12
6
30s - Q10
Is this proportional?
y=2x
no
yes
30s