Subtract from both sides of the inequality.

Divide each term by and simplify.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Simplify each term.

Divide by .

Move the negative in front of the fraction.

Rewrite in slope-intercept form.

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

Reorder and .

Write in form.

Reorder terms.

Remove parentheses.

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 3x+4y<=12