Question

Find the line’s slope and y-intercept. If either of these do not exist, you may enter DNE or NONE.

A line has equation y=7-x
This line’s slope is_______.
This line’s -intercept is _____.

Answer 1

The line's slope is -1
The lines y-intercept is +7 or 7

Explanation:

Equations of straight lines are in the form y=mx+c

In this question it has been rearranged to give:
y=c+mx

Where c = +7 or 7 and m= -1 (there is an invisible 1 in front of x)

c is the y-intercept and m is the gradient