Question

How do you graph the inequality `y <=-x`?

Answer 1

To graph this we draw a diagonal solid line through the origin. We use a solid line because the inequality operator is "less than or equal to". If the operator was just "less than" we would use a dashed line.

For each positive value of `x` we go the same number of units below the x-axis. And for each negative value of `x` we go the same number of units above the x-axis.

graph{y <= - x [-10, 10, -5, 5]}