Question

Find the values of r for which the line (r + 5)x – (r – 1)y + r
2 + 4r − 5 = 0 is
(a) parallel to the x-axis.
(b) parallel to the line 2x − y + 4 = 0.
(c) parallel to the y-axis.
(d) perpendicular to the line x − y + 32 = 0

Answer 1

Answer:

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