What is the slope and y-intercept of the line #x = -5#?
This equation is a vertical line.
Which means that, regardless of the value of y, x is always
It has no y-intercept because it never crosses the y-axis.
It just goes up and down (theoretically forever) at the x-value of
This equation also has an undefined slope. Slope is the Rise over the Run, right?
Suppose y2 = 5 and y1 = 3. Then the Rise is 2 for every change in x-value.
But x doesn't change. For the Run, you can't choose two DIFFERENT values for x. X is always - 5.
If you subtract
A vertical line has an undefined slope.
So the equation