This is a horizontal line example with the point is (0,5), equation is y=5.

Horizontals line always have the zero slop, as there is nothing on the x line. Then 0 divided by any numbers Is equal 0. It can be seen as all the point on a graph on y-intercept has the same value.

This is a fraction.

Domain: all real numbers

Range: y=5

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This is a vertical line example with the point is (-3,0), equation is x=-3.

Vertical line always Is undefined. As no number can be divided by zero, so is undefined. It can be seen as all the point on a graph on x-intercept has the same value.

This is not a fraction.

Domain: x=-3

Range: all real numbers