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

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

User Dmytro Yarmak
by
8.3k points

1 Answer

6 votes
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.
User Dubeegee
by
8.6k points
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