Find the value of p if the line which passes through (-1,...
Find the value of p if the line which passes through (-1, -p) and (-2,2) is parallel to the line 2y+8x-17=0?
−27
76
−67
2
Correct answer is D
Line: 2y+8x-17=0
recall y = mx + c
2y = -8x + 17
y = -4x + 172
Slope m1 = 4
parallel lines: m1. m2 = -4
where Slope ( -4) = y2−y1x2−x1 at points (-1, -p) and (-2,2)
-4( x2−x1 ) = y2−y1
-4 ( -2 - -1) = 2 - -p
p = 4 - 2 = 2
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