In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
point 1 (10 , - 5) x1 = 10 y1 = -5
point 2 (10, - 9) x2 = 10 y2 = -9
linear equation​ = ?
Step 02:
Slope formula
The answer is:
The equation of the line is a vertical line in x = 10, since the slope is infinite.