Question

The Values of y varies directly with x. when y = 30, x=5. What is the value of y when x=7. Answer: Y=?

Answer 1

The Values of y varies directly with x

So, y = m * x

where m is constant

when y = 30 , x = 5

so,

30 = m * 5

m = 30/5 = 6

so, y = 6x

when x = 7, then solve to find y

y = 6 * 7 = 42