How do you graph $x=-5$ by plotting points?

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Answer 1 · 2018-02-25T16:52:10

See a solution process below:

To plot a linear equation we just need to plot 2 points and then draw a straight line through the two points.

$x = -5$ indicates for each and every value of $y$ ; $x$ is equal to $-5$ .

We can choose any two values for $y$ to plot two points:

For: $y = -2$ ; $x = -5$ or $(-5, -2)$

For: $y = 2$ ; $x = -5$ or $(-5, 2)$

We can plot these two points as:

graph{((x+5)^2 + (y+2)^2 - 0.025)((x+5)^2 + (y-2)^2 - 0.025) = 0 [-10, 10, -5, 5]}

We can now draw a straight line through the two points:

graph{(x+5)((x+5)^2 + (y+2)^2 - 0.025)((x+5)^2 + (y-2)^2 - 0.025) = 0 [-10, 10, -5, 5]}

$x = -5$ is a vertical line going through $-5$ on the horizontal axis.

How do you graph x=-5x=-5 by plotting points?