Find the slope of the line that goes through the given points. (-9, -7) and (-7,9)

Mathematics

2 answers:

nika2105 [10]3 years ago

7 0

Answer: 8

Step-by-step explanation:

slope = rise/run

slope = (-7-9)/(-9-(-7)) = -16/-2 = 8

ycow [4]3 years ago

7 0

Equation:

Y2-Y1
———
X2-X1

9 - -7 = 16
-7 - -9= 2

16/2= 8
The slope of the line is 8.

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Step-by-step explanation:

$A=(1,2)\\B=(0,-1)\\\overrightarrow{AB}=((0,-1)-(1,2)=(-1,-3)\ ||\overrightarrow{AB}||^2=1+9=10\\\overrightarrow{BC}=((3,-2)-(0,-1)=(3,-1)\ ||\overrightarrow{BC}||^2=9+1=10\\\\Triangle\ is\ isosceles.\\\\\overrightarrow{AB}.\overrightarrow{BC}=(-1,-3)*\left[\begin{array}{c}3\\-1\end{array}\right] =-3+3=0\\\\Triangle \ is\ right.\\\\$