Question 1117843: Hi all, please help me to solve this - I have the answer, but I cannot "back engineer" how we arrived at it. Thank you!
The gradient of the line joining (4, q) to (6, 5) is twice the gradient of the line joining (0, 0) to (4, q). Find q.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The gradient of the line joining (4, q) to (6, 5) is twice the gradient of the line joining (0, 0) to (4, q). Find q.
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Equation:
(q-5)/(4-6) = 2[(q-0)/(4-0)]
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(q-5)/(-2) = 2[q/4]
q-5 = -4(q/4)
4q-20 = -4q
8q = 20
q = 2.5
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Cheers,
Stan H.
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