A line has a y-intercept and a slope of 0. What is the line's equation?

x + y = - 1

y = x - 1

x = - 1

y = - 1

The answer is y = - 1

When the slope is 0, we refer to the line as a constant function. In slope intercept form, the line is equal to y = mx + b

"m" is the slope, and "b" is the y-intercept.

Let's replace those in the function.

y = 0*x - 1

0 multiplied by anything is 0

y = 0 - 1

y = - 1