Answer:
undefined
Explanation:
Equation of a line is y=mx+b
where m is the slope and b is the y intercept

Here there is no y term, so we solve for x

Add 1 on both sides

Divide both sides by 2

If we have equation of the for x= some number then it is the equation of the vertical line. the slope of vertical line is undefined.
Slope of
is undefined