Answer:
y = 9x
Step-by-step explanation:
Given
(2,18)
Required
Represent with a proportional equation
A proportional equation is
y = kx
Where k represent the constant of proportionality
And
(x,y) = (2,18)
Substitute values for x and y
y = kx becomes
18 = k * 2
Multiply both sides by ½
½ * 18 = k * 2 * ½
9 = k
k = 9
Recall that the equation is y = kx
Substitute 9 for k
y = 9x
