Subtract from both sides of the inequality.

Rewrite in slope-intercept form.

The slope-intercept form is , where is the slope and is the y-intercept.

Reorder and .

Use the slope-intercept form to find the slope and y-intercept.

Find the values of and using the form .

The slope of the line is the value of , and the y-intercept is the value of .

Slope:

y-intercept:

Slope:

y-intercept:

Slope:

y-intercept:

Graph a solid line, then shade the area below the boundary line since is less than .

Graph x+y<=4