Question

Determine the slope and y-intercept given the equation below, explain your answer.
x + y = -1

Answer 1

Let's convert the equation into slope-intercept form.

• x + y = -1
• y = -x - 1

In this equation, the slope is the coefficient of x.

The following points can be made:

• Since there is a "-" in front of the x variable, the coefficient of x is -1.
• Since the coefficient is -1, the slope of the line is -1.

The y-intercept of the equation will be a constant.

The following points can be made:

• Since there is a constant on the RHS, that constant will be the y-intercept.
• Since the constant on the RHS is -1, the y-intercept of the line is -1.

In conclusion...

• Slope of line: -1
• y-intercept of line: -1

Answer 2

slope is -1, y-intercept is -1

Explanation:

x+y=-1

convert to slope-intercept form

y=-x-1

y=-1x-1

slope is -1, y-intercept is -1