Find the linear equation that is the straight line through (25, -1) and increasing at a rate of 5 units of y per unit of x.
A) $y = 5 x + 127$
B) $y = 5 x - 127$
C) $y = 5 x - 126$
D) $y = 127 x + 126$
E) $y = 126 x - 127$

Question

Find the linear equation that is the straight line through (25, -1) and increasing at a rate of 5 units of y per unit of x. 
A) $y = 5 x + 127$
B)    $y = 5 x - 127$
C)  $y = 5 x - 126$
D)  $y = 127 x + 126$
E) $y = 126 x - 127$

Quizplus · Accepted Answer

The slope of the line is 5, and it passes through the point (25, -1). Using the point-slope form $y - y_1 = m(x - x_1)$, we get $y + 1 = 5(x - 25)$. Simplifying gives $y = 5x - 126$.

Find the Linear Equation That Is the Straight Line Through y=5x+127y = 5 x + 127y=5x+127

Find the Linear Equation That Is the Straight Line Through $y = 5 x + 127$