Question 23037
x=10 and y=-7 are two different equations.  x=10 is a verticle line that passes through the x axis at 10.  y=-7 is a horizontal line at passes through the y axis at -7.  x=10 will have only one value for x but infinitely many values for y.  y=-7 has only one value for y but infinitely many values for x.


I hope that I got it right?