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

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asked Dec 23, 2017 50.1k views

2 Answers

Charlie Monroe · Answer 1 · 2017-12-28T22:29:48+0000

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.

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

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