Question

What is the constant of variation, k, of the direct variation, y = kx, through (5, 8)?

k = – 8 over 5
k = – 5 over 8
k = 5 over 8
k = 8 over 5

Answer 1

plugin x and y value into the equation solve for k

Answer 2

(x, y)
^y-coordinate
^x-coordinate

Answer 3

while i have you guys here can u check something

Answer 4

8 over 5?
I'm completely dumb when it comes to Algebra.

Answer 5

I got 8 over 5.

Answer 6

that's correct \[\rm \color{red}{y}=k\color{blue}{x} ~~~~~~~~~~~~\rightarrow (\color{blue}{5},\color{red}{8})\]
\[\rm \color{red}{8}=k\color{blue}{5} ~~~~~~~~~~~~ \]

Answer 7

Mk, thanks for the explanation.

Answer 8

I think I medaled you, even if I didn't I gave you "Best Response."

Answer 9

nice one Nnesha :)

Answer 10

o^_^o