WK1 DQ1 - x + 24 or 50 - y Example of an Equation: x + 24 =...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
WK1 DQ1 Due Date: Week One, Day 2 [post to the Main forum] What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your classmates to translate. An equation is a number sentence that says that the expressions on either side of the equals sign (=) represent the same number. An equation is made up of expressions. An expression consists of variables, constants, numerals, and operation signs, and there is no equal sign in an expression. Example of an Expression:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: x + 24 or 50 - y Example of an Equation: x + 24 = 76 or 50 y = 32 You can not solve for a variable in an expression unless you are given a number to substitute for the variable. Then it is called evaluating the expressions. Example: Evaluate 4x when x is 5. Then we can solve for x at this point. 4 x 5 = 20. You can solve for a variable in an equation because it is set equal to something. You solve by getting the variable by itself on one side of the equal sign using addition, subtraction, multiplication, or division. Example: 2x + 4 = 20 2x + 4 4=20-4 2x=16 2x/2 = 16/2 X = 8 For Class to Translate: 10x + 10 = 50...
View Full Document

This note was uploaded on 06/26/2011 for the course MAT 116 taught by Professor Universityofphoenix during the Spring '09 term at University of Phoenix.

Ask a homework question - tutors are online