Two Variable Equations and Inequalities
Presentation
•
Mathematics
•
9th - 12th Grade
•
Hard
Joseph Anderson
FREE Resource
4 Slides • 5 Questions
1
Lesson 17 Two Variable Linear Inequalities
TEKS 2A.3F and 3G
We will solve two variable linear inequalities.
I will summarize how to graphically solve and check solutions of two variable linear inequalities.
2
Poll
BELLRINGER- Solve the following Absolute Value Inequality:
∣2x−4∣≤6
Solution(s) is/are :
−1≤x≤5
x≤−1 or x≥5
x≤5
x≥−1
3
Review:
4
Dropdown
5
Dropdown
6
Slope tells us where to shade
Using the slope-intercept form of an equation (y=mx+b) we can determine where to shade based off the slope!
How to remember which slope is positive or negative on the graph:
Positive slope always starts in Quadrant I (+,+)
Negative slope always starts in Quadrant II (-,+)
7
Multiple Choice
Pick the graph below that displays a NEGATIVE linear slope.
8
Isolate the variable to one side of the inequality. Direction of the inequality determines where to shade!
Only x: shade left (</≤) or shade right (>/≥)
Only y: shade below (</≤) or shade above (>/≥)
Special Cases:
9
Dropdown
Lesson 17 Two Variable Linear Inequalities
TEKS 2A.3F and 3G
We will solve two variable linear inequalities.
I will summarize how to graphically solve and check solutions of two variable linear inequalities.
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