Double Inequalities (Leaving Cert Mathematics): Flashcards

Inequalities with two inequality signs

Solve both inequalities separately

$3x\le 5x+3$

$x \ge -\frac{3}{2}$

Flip the sign

$5x+3 \le 23$

$x \le 4$

$-\frac{3}{2} \le x \le 4$