50.1k views
2 votes
What is the constant of variation, k, of the line y = kx through (3,18) and (5,30)?

2 Answers

4 votes

Answer:

D) 6

Explanation:

User Bhavya Parikh
by
8.3k points
3 votes
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.
User Charlie Monroe
by
8.2k points