Question

2. Write the equation of the line which passes through (2, 1) and is perpendicular to x = –2.

Answer 1

The slope of a line x = -2 is not defined or infinity because line is perpendicular to x-axis
therefore the slope of required line will be be zero
The equation of the required line is
y = 0(x) +C
This passes through the point (2,1)
y= 0(2) +1
y = 1