Question

How do you graph `y<=-x+2` on the coordinate plane?

Answer 1

See a solution process below:

Explanation:

First, solve for two points as an equation instead of an inequality to find the boundary line for the inequality.

For: `x = 0`

`y = -0 + 2`

`y = 2` or `(0, 2)`

For: `x = 2`

`y = -2 + 2`

`y = 0` or `(2, 0)`

We can now graph the two points on the coordinate plane and draw a line through the points to mark the boundary of the inequality.
The boundary line will be solid because the inequality operator contains an "or equal to" clause.

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

Now, we can shade the left side of the line.

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