Question

Which statement is true about the graphs of the two lines y = –6 and x = ?

Answer 1

Y = - 6......this is a horizontal line with a slope of 0
x = ?....this is a vertical line with an undefined slope

These lines are perpendicular

Answer 2

The lines are perpendicular to each other because the graph of y = –6 is a horizontal line with a slope of 0, and the graph of x = is a vertical line with a slope that is undefined.
This statement is true