Question 572497
In a horizontal line, all points have the same value of y, and can have any value for x. The equation of a horizontal line looks like {{{y=K}}} for some constant {{{K}}}.
The horizontal line that passes through (7,0) has 0 for y value for all its points. The equation is
{{{y=0}}} and the line is the x axis.
In a vertical line all points have the same value for x. In a vertical line that passes through (11,-4) the value of x for all points is 11, and the equation for that line is
{{{x=11}}}