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
What factor is common to all the expressions x2 - x, 2x2 + x - 1 and x2 - 1?...
The distance between two towns is 50km. It is represented on a map by 5cm. Find the scale used ...
Find the area bounded by the curves y = 4 - x2 and y = 2x + 1 ...
Solve the simultaneous equations for x in x2 + y - 8 = 0, y + 5x - 2 = 0...
Find the equation of the perpendicular at the point (4,3) to the line y + 2x = 5 ...