Question

If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n? 6

Answer 1

Answer: n = 30

Explanation:

if y varies directly as x, then y = kx

so y/x = constant

180 = k * n

180/n = y/x

180/n = n/5

Let us find n

180/n = n/5

180*5 = n*n

900 = n^2

n = 30

From MysticAlanCheng