SOLUTION: L1 is the straight line 2x+3y+6=0. without finding the gradient of L1, find the equation of (a) L2 which passes through the point (1,-2) and parallel to L1 (B) L3 which is perpe

Question 1118508: L1 is the straight line 2x+3y+6=0. without finding the gradient of L1, find the equation of
(a) L2 which passes through the point (1,-2) and parallel to L1
(B) L3 which is perpendicular to L1 and passes through the point (2,-1)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Parallel have the same slope or same ratio of coefficients on x and y.

Perpendicular have coefficients such that L1, has Ax+By; and L2, has Bx-Ay.

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L1 is the straight line 2x+3y+6=0. without finding the gradient of L1, find the equation of
(a) L2 which passes through the point (1,-2) and parallel to L1
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You do the other question.
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