Question

The slope is -1 and the y-intercept is -5. Write a linear equation in slope-intercept form.

Answer 1

Explanation

• Slope-intercept form

$y = mx + b$

where m = slope and b = y-intercept.

We have both given slope and y-intercept. We can simply substitute the given slope and y-intercept in slope-intercept form.

• Substitution

Substitute m = -1 and b = - 5 in the equation.

$y = - 1x - 5 \\ y = - x - 5$

We don't usually write 1x or -1x instead we write -x or x.

Answer

$y = - x - 5$