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How do i do this question The gradient of the line joining (-13) to (pq) is -2. The gradient of the line joining (pq) to (52) is -1. Calculate the values of p and q?
JSgp6690
If you mean point of (-1, 3) with a gradient of -2 and point (5, 2) with a gradient of -1 then as straight line equations they work out as y = -2x+1 and y = -x+4 respectively.
As to the values of p and q not enough information has been given.
Wiki User
∙ 6y ago
Wiki User
∙ 6y ago(q - 3)/(p + 1) = -2 => q - 3 = -2p - 2(q - 2)/(p - 5) = -1 => q - 2 = -p + 5
Solving these simultaneous equations, p = -6, q = 13
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