99(x-77)=99(x+88)
99x-7623=99x+8712
99x-99x=8712+7623
0=670824.no solution as x becomes 0
Answer:
Mid-point: 
Equation: 
Step-by-step explanation:
To find the mid-point of AB, simply add up their x and y coordinates and divide by 2 respectively to find their middle point.



To find the perpendicular slope that passes through the mid-point, we need to know the slope between AB first.
Slope of AB:
=
=
= 
Multiplying slopes that are perpendicular with each other always results in -1.


By the point slope form:

Plug in the coordinates of the mid-point:

Equation: 
Not understanding the question but slope-intercept form is y=mx+b
Answer:
b=-31/9
Step-by-step explanation:
m=y2-y1/x2-x1
m=3-4/-4-5
m=-1/-9
m=1/9
y=mx+b
-4=1/9+b
-4+1/9=b
-31/9=b