Answer:
m (slope) = 37
Step-by-step explanation:
use the slope-line formula, y2 - y1/x2 - x1
put in coordinates (5, 20) for x1 and y1
put in coordinates (4, -17) for x2 and y2
simplify
Answer:
-43
Step-by-step explanation:
So first things first you will multiply -9 by 4 and that gives you -36, Next you will add -7 to -36 which gives you -43.

Hope this helps :D
Answer:
or 
Step-by-step explanation:
The perpendicular slope is the opposite-reciprocal of the original slope:
Perpendicular slope of -2 is 
Write the equation in point-slope form (
):

Convert to slope-intercept form if needed:


Answer:
=7.5
Step-by-step explanation:
Answer:
and 
Step-by-step explanation:
At=As+Ar; A=b.h and
, then: At=(x+120)x so
(x+120)x=4500,
Applying cuadratic equation formula: