Question

What is the equation of the line that passes
through the points (2, 1) and (2, 7)?

Answer 1

x=2 (The equation is not a function)

Explanation:

a function cannot have different y values for same x values.

(2, 1) and (2,7) have the same x value of 2 but have different y values.

However, if you are not considering that, the equation will be

x=2