Question on: JAMB Mathematics - 2012
Find the equation of the line through the points (-2, 1) and (-(\frac{1}{2}), 4)
A
y = 2x - 3
B
y = 2x + 5
C
y = 3x - 2
D
y = 2x + 1
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Correct Option: B
(\frac{y - y_1}{x + x_1}) = (\frac{y_2 - y_1}{x - x_1})
(\frac{y - 1}{x + 2}) = (\frac{4 - 1}{-\frac{1}{2} + 2})
= (\frac{y - 1}{x + 2}) = (\frac{3}{\frac{3}{2}})
y = 2x + 5
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