Question

Help with Direct Variation !

Answer 1

to begin with, a direct variation function takes a form y = k*x
where k is a slope, the equation forms a line

Answer 2

So if a function is linear, it is a direct variation

Answer 3

The constant of variation will be the slope of the line through those points

Answer 4

So the function is not linear?

Answer 5

Can you draw a straight line through those 3 points?

Answer 6

If yes, it is linear

Answer 7

the k value constant of variation will be the slope, namely use 2 of the points (x1,y1) and (x2,y2) and calculate
\[m = k = \frac{ y2 - y1 }{ x2 - x1 }\]