Explanation:
The slope is given by x = 10 means the straight line will run parallel to y-axis and for every value of y, x is 10.
The equation of a straight line with an undefined slope is given as x = a, where a is any real number and it is a constant. It is because the slope is measured by tan
where
is the angle between graph with x-axis. Here,
= 90°, tan 90° = infinity or not-defined.