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Ex 2: Set Problem Solving - Find the Number of Element in the Union of Two Sets Using a Formula
By Mathispower4u
Ex 2: Set Problem Solving - Find the Number of Element in the Union of Two Sets Using a Formula
Constraint solution sets of systems of linear inequalities
By Khan Academy
Given the graph of a system of inequalities, Sal finds the x-values that make the ordered pair (x,-2) a solution of the system, which is the solution set constrained to y=-2. Then he solves a similar problem where x is constrained to 4.
Constraint solution sets of two-variable linear inequalities
By Khan Academy
Sal determines which x-values make the ordered pair (x,-7) a solution of 2x-7y<25. He also solves a similar problem where the inequality is given as a graph.
Reading bar charts: comparing two sets of data
By Khan Academy
A bar chart is especially useful with comparing two sets of data. The difference in the bars give us a quick snapshot that allows us to draw some conclusions.