How do you graph the equation #y=-x#?

1 Answer
EZ as pi
Jul 29, 2017

Work out points and plot them on a grid.

Explanation:

The basic way to draw a graph is to plot points.

To find points, choose different #x# values and then work out the matching #y# values.

In this case, the #y# values will be the negative of what #x# is, so just change the sign of #x#.

Examples would be:
#(5,-5), (8, -8), (0,0), (-4, 4), (-7, 7)# and so on.

Plot these points on a grid and join them with a straight line.
The result is shown below:

graph{y=-x [-20, 20, -10, 10]}

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