Question

Graph the solution set of the inequality 3(1 – x) < 9.

Remember that when you multiply or divide both sides
of an inequality by a negative number, you must reverse
the direction of the inequality sign.

Answer 1

x > -2

Explanation:

3(1 – x) < 9

Divide each side by 3

3/3(1 – x) < 9/3

1-x < 3

Subtract 1 from each side

1-x-1 < 3-1

-x < 2

Multiply each side by 1, remembering to flip the inequality

-x*-1 > 2*-1

x > -2

Open circle at -2, line going to the right