Direct or Inverse
Constant of Variation
Direct Variation
Inverse Variation
I Dunno
100
y=7/x
Inverse Variation
100
Given y=-5x What is the constant of variation
k = -5
100
If y varies directly and y=2 when x=6. find y when x=9
y=3
100
Given that y varies inversely with x and y=3 when x=2. Find y when x=3
y=2
100
If x and y vary directly as x increases what happens to the value of y.
Y increases
200
y=4x
Direct Variation
200
If y varies directly with x and y=-4 when x=2. What is the constant of variation?
k=-2
200
If y varies directly with x and y=80 when x=16. Find y when x=3.
y=15
200
Given that y varies inversely with x and y=1/2 when x=10. Find y when x=2
y=5/2
200
Is y=x/18 an example of direct variation, inverse variation, or neither?
Direct
300
Inverse Variation
300
If y varies inversely with x and y=40 when x=16. What is the constant of variation?
k=640
300
In an hourly job, the more hours you work (x), the more money you earn (y). You made $51.00 working 7 hours. How much money is made in 12 hours of work?
$87.43
300
The time required to paint a house decreases as the number of painters increases. It takes 4 hours for 7 painters. How long will it take 3 painters to do the job?
9 1/3 hours
300
If x and y vary inversely find the missing value. (10 , 12) (x , 5)
What is x=24
400
Neither
400
If y varies inversely with x, use the point (3,7). What is the constant of variation.
k=21
400
Given y varies directly with x and y=7 when x=14. Find x when y=9.
x=18
400
If y varies inversely with x and y=1/3 when x=9. Find x when y=9
x=1/3
400
If x and y vary inversely, as x increases. What happens to the value of y?
Y decreases.