The gradient of a line joining (x,4) and (1,2) is 12 1 2 . Find the value of x

Question 1 Report

The gradient of a line joining (x,4) and (1,2) is $\frac{1}{2}$ . Find the value of x

-3

-5

Answer Details

Gradient m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

\frac{1}{2} = \frac{2 - 4}{1 - x}

1 - x = 2(2 - 4)
1 - x = 4 - 8
1 - x = -4
-x = -4 - 1
x = 5

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