Bellwork Graph on a number line 1.) x < 4 2.) y ≥ -2 3.) x ≤ 0 Solve 4.) x – 7 > 25

SOLVING INEQUALITIES BY USING ADD. & SUBTR. ALGEBRA 1 3-2

SOLVING INEQUALITIES IS VERY SIMILAR TO SOLVING EQUATIONS WITH ADDITION OR SUBTRACTION. ADD THE OPPOSITE OF VARIABLES, THEN CONSTANTS TO BOTH SIDES.

GRAPHING INEQUALITIES IS VERY SIMILAR TO GRAPHING EQUATIONS EXCEPT WE ADD SHADING TO THE PROCESS. Let’s review how x=5 looks like on a number line.

Graphing Inequalities Now, for inequalities it could be a closed point for greater than or equal to (> or =), or less than or equal to (< or =). An open point constitutes a < or > symbol without the equals part.

EXAMPLE 1 x - 6 < -4

EXAMPLE 2 -15 -5 + x

3-2 Vocab. Equivalent inequalities