Question 148011
Horizontal lines are <font size=4><b>always</b></font> in the form of {{{y=k}}} where k is the y-coordinate of the points that the line goes through. So if the line goes through the point (7,-3), this means that the y-coordinate is -3. So the equation of this line is {{{y=-3}}}





If we graph the equation {{{y=-3}}}, we can verify our answer:


 {{{drawing( 500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0x-3),
 circle(7,-3,0.08),
 circle(7,-3,0.10),
 circle(7,-3,0.12)
 )}}} Graph of {{{y=-3}}} through the point *[Tex \LARGE \left(7,-3\right)]