Question

Y∝√x If y=60 when x=36 find,y when x=16

Answer 1

y = 10√16) = 40

Explanation:

This says, "y is proportional to the square root of x." We are told that y = 60 when x = 36. Find the formula for this function. Then, determine what value y will take on when x = 16.

y = k√x becomes 60 = k√36, or 60 = 6k. Then k must be 10, and the formula is y = 10√x.

If x = 16, y = 10√16) = 40