Question

Find the equation of the line between (7,−9) and (5,6) in slope intercept form.

Answer 1

ANSWER: 2y = -15x + 87

SOLUTION:

Using the two point form, (y - y1) = (x2 - x1)/(y2 - y1) (x - x1)

Y +9 = 15/-2 (x - 7)

-2y - 18 = 15x - 105

2y = -15x +87

Answer 2

Set y=ax+b pass (7,-9) (5,6)
=》-9=7a+b
6=5a+b
=》2a=-15
a=-15/2
b=6-5a=6+37.5=43.5
=》y= -15/2(x)+43.5
2y+15x=87