If given two points A(3, 12) and B(5, 22) on a x-y plane. Find the equation of the straight line with intercept at 2.
-
A.
y = 5x + 2 -
B.
y = 5x + 3 -
C.
y = 12x + 2 -
D.
y = 22x + 3
Correct Answer: Option A
Explanation
The equation of a straight line is given as (y = mx + b)
where m = the slope of the line
b = intercept
Given points A(3, 12) and B(5, 22), the slope = (frac{22 – 12}{5 – 3})
= (frac{10}{2}) = 5
Hence, the equation of the line is (y = 5x + 2).
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