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Question
Determine x so that the slope of the line through (1, 4) and (x, 2) is 2.
Solution
Given, the slope of the line through (1, 4) and (x, 2) is 2.
∴ `(2 -4)/(x -1)=2`
`(-2)/(x - 1) = 2`
`(-1)/(x - 1) = 1`
–1 = x – 1
x = 0
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