Math
posted by Carla on .
Suppose that y is directly proportional to x.
a. Use the given information to find the constant of proportionality k.
b. Then use y=kx to find y for x=6
y=58 when x=7

y = k * x
When x = 7 then y =  58
 58 = k * 7 Divide both sides with 7
 58 / 7 = k
k =  58 / 7
y = k * x
when x = 6
y =  58 * 6 / 7
x =  348 / 7