1-5 Equations Goals: Solve equations with one variable

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Presentation transcript:

1-5 Equations Goals: Solve equations with one variable Solve equations with two variables.

Vocabulary Open Sentence – a math statement that contains algebraic expressions and symbols. Equation – two expressions connected by an equal sign. Solution– any number that makes a true statement when it replaces the variable in an equation.

Vocabulary Replacement set – the set of values to be substituted into an expression. Solution set – the set of all solutions to an equation.

Find the solution set for 4a + 7 = 23 if the replacement set is {2, 3, 4, 5, 6}. Answer: The solution set is {4}.

Examples Find the solution set of each equation if the replacement set is y:{2,3,4,5,6} 3y + 6 = 21 5 2y + 5 = 17 6

Find the solution set for 6c – 5 = 7 if the replacement set is {0, 1, 2, 3, 4}. B. {2} C. {1} D. {4}

Practice Page 36 #1-5

Equations with Two Variables Make a table of values for each equation if the replacement set is {0, 2, 4, 6, 8} y = 3x + 12 y = -5x + 7 y = 1 2 x – 4

More Practice Page 37 #37, 38

Homework Pages 36-37 #11-18 #57-60