35
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
290
25
3
y=(320 x 25 )/ 40 = 200.
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
1
x = 24
m = 24
The answer is x=10. If: x=20 y=8 z=4 then: y=8/2=4 z=4*2=8 since x varies directly with y, meaning whatever happens to y, happens to x, so if y was divided by 2, then x should be divided by 2. After all, the inverse of division is multiplication.
290
Assuming that you want to find y when x is 40, it is 200.
y is 12
25
80
3
If y varies directly as x and if x = 2 when y = 8 then k = 4.