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

Question

asked Oct 20, 2017 109k views

1 Answer

Dubeegee · Answer 1 · 2017-10-24T10:27:47+0000

y - 18 = (30 - 18)/(5 - 3) (x - 3)
y - 18 = 12/2 (x - 3)
y - 18 = 6(x - 3) = 6x - 18
y = 6x

The constant of variation (k) is 6.