### Home > CCA2 > Chapter Ch4 > Lesson 4.2.2 > Problem 4-84

4-84.

Solve each of the following inequalities. Express the solutions algebraically and on a number line.

Solve the equation

for . Plot the boundary point on a number line. Test a point on each side of the boundary point. Shade the region that makes the inequality true.

See part (a). This inequality is quadratic, so look for two boundary points.

or