math
posted by drake .
Can you check if my answer is correct? thanks...
Find the equation of the line that passes through the points (2,1) and (1, 5).
m = y2 y1/x2x1
= 51/ 1(2)
= 4/1+2
= 4/3

There are two things here.
I think you dropped a sign along the way. You have
y2  y1 = 51
whereas I think you meant
y2  y1 = 51
When you fix that, you still need to find the yintercept c to finish the whole equation.