Step One
Find the slope
y2 = 79; y1 = -20; x2 = 9; x1 = -2
<u>Formula</u>
m = (y2 - y1) / (x2 - x1)
<u>Solve</u>
m = (79 - - 20) / (9 - - 2)
m = 99/11
m = 9
Step Two
Set up the equation. Use (-2,-20) as the point.
(y - -20) = 9(x - - 2)
y + 20 = 9(x + 2 )
Answer c: 2 and 3
Of course Q is on plane PQR. If S is as well, then QS is as well.
Answer:
61.45
Step-by-step explanation: