Chapter 1 Vocabulary 1.) variable 2.) algebraic expression 3.) numerical expression 4.) expression

1-1 VARIABLES AND EXPRESSIONS Algebra 1

VARIABLES A variable is a symbol, usually a letter that represents the value of a variable. Variables are alphabetical letters such as; a, b, c, x, & t Variables and numbers are included in algebraic expression

Algebraic Exp. Vs. Numeric Exp. Algebraic Exp. includes variables and numbers For example, a + 5 Numeric Exp. includes numbers only For example, 2 + 5

Expression vs. Equation An expression includes only one side of an equation. For example, a + 5 An equation includes both sides of an equation. For example, a + 5 = 7

Ex 1)Write an algebraic expression for the word phrase. a.) A number x more than 6 *b.) A number t less than 4

Ex. 2) Write an algebraic expression for the word phrase. 1.) 7 times the product of x and t 2.) The quotient of 29 and b

Ex. 3)What is an algebraic expression for the word phrase? a.) The sum of 13 and twice a number h b.) 6.8 more than the product of 5 and n c.)7 minus the quotient of 3 and v 20.

Assignment

4.) Write a verbal expression for each algebraic expression. a.) 3t c.) 5x +9 b.) 3 + t d.) x/5 - 4

5.) Refer to Got It? #5 On pg 6 #8 on Lesson Check, too