Question

How do you graph using slope and intercept of `x+y=-1`?

Answer 1

`m=-1`
`b=-1`

Explanation:

Convert `x+y=-1` to slope-intercept form by solving for `y`.

Subtract `x` from both sides.

`y=-x-1`

The equation is now in slope-intercept form, `y=mx+b`, where `m` is the slope, and `b` is the y-intercept.

`m=-1` and `b=-1`

Since any whole number can be expressed as a fraction with `1` as the denominator, we can express `m` as `(-1)/1`. Since `b` is the value of `y` when `x=0`, we have the point `(0,-1)`.

Plot the point, then use the slope to find more points. Starting at `(0,-1)`, move down one space and right one space. Plot the point. You only need two points for a straight line, but you can plot more if you wish. Draw a straight line through the points.

graph{y=-x-1 [-12.6, 12.6, -6.3, 6.3]}