Question

Which is in an equation of the line through (0,0) and (-8,-5)?

Answer 1

To finde the equation of the line troughh the points (0;0) and (-8;-5) first you must find the slope of the line. You have to use the next formula:

$m=\frac{y2-y1}{x2-x1}$

Replacing the points in the previous formula

$m=\frac{-5-0}{-8-0}=\frac{5}{8}$

As the line passes trough the origin of coordinates (point (0;0)) the equation is:

$y=\frac{5}{8}x$

So the answer is y= 5/8 x (option B)