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Testing solutions of inequalities
By Khan Academy
A solution to an inequality makes that inequality true. Learn how to test if a certain value of a variable makes an inequality true.
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.
Check solutions of two-variable linear inequalities
By Khan Academy
Sal determines whether the ordered pairs (3,5) and (1,-7) are solutions of the inequality 5x-3y���������������������25. He discussed the problem both algebraically and graphically.
One-step inequality involving addition
By Khan Academy
Watch this explanation of how to solve 1-step inequalities and respresent the solution on a number line. Solving an inequality means finding all of its solutions. A solution of an inequality is a number which when substituted for the variable makes the inequality a true statement. Unlike an equation an inequality has many solutions.
Graph inequalities and check solutions
By Khan Academy
Learn how to graph two-variable linear inequalities.
Graph inequalities and check solutions
By Khan Academy
Learn how to graph two-variable linear inequalities.
Check solutions of systems of inequalities
By Khan Academy
Sal checks whether the ordered pair (2,5) is a solution of the following system: y���������������������2x+1 and x>1.
Two-variable linear inequalities word problems
By Khan Academy
Sal is given a two-variable linear inequality that models a context about watering plants, and answers a question about the solution set of the inequality in terms of the context.
One-step inequalities
By Khan Academy
In addition to solving the inequality, we'll graph the solution. Remember to swap if you mutiply both sides of the inequality by a negative number.
Two-variable linear inequalities word problems
By Khan Academy
Sal is given a two-variable linear inequality that models a context about watering plants, and answers a question about the solution set of the inequality in terms of the context.
Two-variable linear inequalities word problems
By Khan Academy
Sal is given a two-variable linear inequality that models a context about watering plants, and answers a question about the solution set of the inequality in terms of the context.
Two-variable linear inequalities word problems
By Khan Academy
Sal is given a two-variable linear inequality that models a context about watering plants, and answers a question about the solution set of the inequality in terms of the context.
Graph systems of inequalities and check solutions
By Khan Academy
Sal determines the solution set of the following system: y���������������������2x+1 and y<2x-5 and x>1. He does that by graphing the system and analyzing the graph.
Graph systems of inequalities and check solutions
By Khan Academy
Learn how to graph systems of two-variable linear inequalities.
Graph systems of inequalities and check solutions
By Khan Academy
Learn how to graph systems of two-variable linear inequalities.
Graph systems of inequalities and check solutions
By Khan Academy
Sal determines the solution set of the following system: y���������������������2x+1 and y<2x-5 and x>1. He does that by graphing the system and analyzing the graph.