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Graphing Horizontal and Vertical Lines

Graphing Horizontal and Vertical Lines 1.2 - Solution

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a

Equations given as only a constant -value represent a horizontal line. Thus, the -value will be for all points on the line. Let's graph three arbitrary points with -value

We know now complete the graph with a line through the points.

b
Once again, there is no in the equation which means that can take all values and will always be Therefore, we should plot some points with the -value It's a bit tricky to locate but it will be somewhere between  and on the -axis, closer to

Now, the graph of will pass through all points with -value