GRAPHING GRAPHING LINEAR LINEAR INEQUALITIES IN INEQUALITIES IN SLOPE-INTERCEPT SLOPE-INTERCEPT FORMFORM

Algebra 1 Review Day 4

What is a linear What is a linear inequality?inequality?

Linear inequalities are in slope-intercept form.

What does this look like?What does this look like?

bmxy

bmxy bmxy

bmxy

Step 2Step 2

SYMBOLS MEANING LINEWHAT DOES

IT LOOK LIKE?

< , >< , >The boundary line is not included in the solution set.

Dashed

≤ ≤ , ≥, ≥The boundary line is included in the

solution set.Solid

Greater Than Less Than

> > < <

Shade Up! Shade Down!

Our Example for the DayOur Example for the Day

23

2 xy

Horizontal and Vertical Horizontal and Vertical LinesLines

y 5

Horizontal and Vertical Horizontal and Vertical LinesLines

x 1

GraphGraph

9x 9y 27

MAP TAP 2003-2004Parallel and Perpendicular Lines

10

Write the equation of the line that passes through (6,-10) and is perpendicular to y = -2x+1.