Question 778705
write the equation of the line:\ that passes through points
 (8,-13) and (-4,5) in slope intercept form.
:
The slope/intercept form: mx + b = y
Replace x and y to form two slope/intercept equations:
8m + b = -13
-4m + b = 5
-------------subtraction eliminates b, find m
12m = -18
m = -18/12
m = -1.5
Find b using the 2nd equation
-4(-1.5) + b = 5
+6 + b = 5
b = 5 - 6
b = -1
:
The equation: y = -1.5x - 1
:
:
Check solutions in the 1st equation
8(-1.5) - 1 = -13
-12 - 1 = -13