algebraweekconceptcheck

# algebraweekconceptcheck - satisfy the equation How do you...

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How do you know when an equation has an infinite number of solutions? A linear equation has infinitely many solutions if, upon simplification, we end up with an algebraic identity. For example, consider 2x + 10 = 2(5 + x) 2x + 10 = 10 + 2x Canceling the 2x term on both sides, we end up with 10 = 10. (This is an identity since it is always true that 10 = 10) Therefore, the equation 2x + 10 = 2(5 + x) has infinite solutions (Any value assigned to x will
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Unformatted text preview: satisfy the equation) How do you know when an equation has no solution? A linear equation has no solution if, upon simplification, we end up with something which is mathematically false. For example, consider 3x - 5 = 3(5 + x) 3x - 5 = 15 + 3x Canceling the 3x term on both sides, we end up with -5= 15. (This is false) Therefore, the equation 3x - 5 = 15 + 3x has no solution (No value assigned to x will satisfy the equation)...
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## This note was uploaded on 03/14/2012 for the course MATH 116 116 taught by Professor Stone,g during the Spring '10 term at University of Phoenix.

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