Answer:
if y is directly proportional to x,y is 10 when x is 3.what is the value of y when x is 5
Step-by-step explanation:
y = kx, where k is constant of variation
use values of 10 for y and 3 for x to find k:
10 = k3, so k = 10/3
so y = 10/3 * x
when x = 5
y = 10/3 * 5 = 50/3
