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
Correct Answer: Option B
Explanation
(frac{y – y_1}{x – x_1}) = (frac{y_2 – y_1}{x_2 – 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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