Hello!
First of all, we can see that the y-intercept is 0. This means that the correct answer will look like y=mx+0, or y=mx. A, B, and D all have a y-intercept. Therefore, the correct answer is C.
Just to verify, we see that C has a slope of eight. We can check this by finding two points (0,0) (10,80), and divide the difference of the y-values by the difference of the x-values.
[tex] \frac{80-0}{10-0} = \frac{8}{1} = 8[/tex]
Therefore, our answer is C. m=8h.
I hope this helps!
