Question

Write the equation of the line in slope-intercept form.

A) y = 2/5x + 4
B) y = - 2/5 + 4
C) y = - 5/2 + 4
D) y = 4x + 10

Answer 1

The answer is B.
Slope-intercept line is written as:
y=mx+b
m=slope
b=y-intercept
4 is the y-intercept because the line crosses the y-axis at 4.
The slope is -2 over 5, because slope is written as y over x.
So, if you start at the point at the 4, count 2 spaces down and 5 spaces right. The line crosses the point exactly, which is how you know the slope is accurate.