<, >, ≤, ≥ and Graphing Inequalities
Download: mp3 and materials on Discovery Streaming
View: Lyric Explanation
Inequalities are made up of two expressions
Where we isolate the variable with inverse operations
In a “10 is less than 2x” formation
Divide the 2 by both sides to find the 5, X relation
Open circle over 5, arrow to the right
X is greater than five
Chorus:
Inequality is graphed on the number line
Like circle open to the left
Or circle closed to the right - uh huh
X is less than 5, open circle, left along that line
Or greater than or equal to 9
A closed circle and an arrow to the right
Here’s a 4 symbol range design
Inequalities, familiar, those two expressions
Negative 3x plus 2 is greater than or equal to 11
Isolate the variable with inverse operations
But when you’re dividing by a negative
The symbol turns direction
A closed circle, arrow to the left
X less than or equal to negative 3 is the best
Open to the left, greater than
Open to the right, less than
Open to the left, bar, greater than or equal to
Open to the right, bar, less than or equal to