Question

What is the constant of variation, k, of the line y = kx through (3,18) and (5,30)?

Answer 1

Equation of a line through (3, 18) and (5, 30) is given by
y - 18 = (30 - 18)/(5 - 3) (x - 3)
y - 18 = 12/2 (x - 3) = 6(x - 3)
y - 18 = 6x - 18
y = 6x

Therefore, k = 6.

Answer 2

Answer:

D) 6

Step-by-step explanation: