Answer:8.8317687
Step-by-step explanation:
To find the square root of 78
We gets
√78=8.83176087
Using the distance formula we can determine the perimeter of PQR.
Distance formula: d=√(x-x1)^2+(y-y1)^2
distance of PR: √(-2+2)^2+(9+3)^2= 12
distance of QR: √(7+2)^2+(-3+3)^2=9
distance of PQ: √(7+2)^2+(-3-9)^2= 15
Perimeter: 12+9+15=36
The answer to this equation is y=-8x-19
I hope this helps!!!!!!!!
