y / r2 = a constant (k) so k = 405/81 ie 5. k = y/4 when r = 2, so y = 20.
57
What is y? Fx varies with x, but y could be anything.
m = 24
mensos yo no me la seee
x = 5.y.z so 5.10.12 = 600
80=4x, z=6x. find Z. x=80/4, x=20. z=6x20 z=120 answer= 120
57
40
y = -5
4x= y
y = 10x
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
What is y? Fx varies with x, but y could be anything.
y = 8
25
Since r varies directly with s, we have r = ks (replace k with 5 and s with 7) r = (5)(7) r = 35
m = 24