select the coordinates of two points on the line y = −2

is the line for the equation y = 1 horizontal or vertical? what is the slope of this line?

select the equation of the line that passes through the point (−2, 3) and is perpendicular
to the line on the graph.

which of the following lines is parallel to x = 4?

select the equation of the line that passes through the point (5, 7) and is perpendicular to the line x = 4.