Which of the following is the equation of the line that passes through the points (7.5, 3.5) and (2.5, 5.5)?
Show answer & explanation
Correct answer: B
Explanation
Slope,
m = (5.5 − 3.5) / (2.5 − 7.5)
= 2 / (-5)
= -2/5
Using the point-slope form,
y − 3.5 = -2/5(x − 7.5)
Upon simplification,
2x + 5y = 32.5
(or, by removing the decimal)
4x + 10y = 65