How do you find the important points to graph y = x - 3 + 4?

1 Answer
Nov 4, 2015

"slope= m"=1"
"y-intercept"="b"="1"
"x-intercept"=-1"

Explanation:

y=x-3+4

Simplify.

y=x+1

This equation is in slope-intercept form, y=mx+b, where m is the slope +1, and b is the y-intercept +1. The y-intercept is the value of y when x=0.

The point is (0,1).

The x-intercept is the value of x when y=0. Substitute 0 for y and solve for x.

0=x+1

-1=x

Switch sides.

x=-1 is the x-intercept.

The point is (-1,0)

Plot the points for the x-intercept and the y-intercept and draw a straight line through the points.

graph{y=x+1 [-10, 10, -5, 5]}