Question

If y is proportional to x, find an equation that connects them given that y=56 when x=8

Answer 1

Y=7X

Explanation:

The relationship is linear, Y=KX, plug into y=56 and x=8, we can get k=7

Answer 2

y = 7x

Explanation:

Given y is proportional to x then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition y = 56 when x = 8, then

56 = 8k ( divide both sides by 8 )

7 = k

y = 7x ← equation of proportion