Systems of Equations

# These lines are parallel they have the same slope

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Unformatted text preview: _ x+ 1 -2x y-int = +3 (0, 3) y= y-int = +3 y = -2x + 3 9 8 7 6 5 4 3 2 1 5 CHAPTER 7 TEST REVIEW ANSWER KEY 13.) The sum of Anthony's age and his father's age is 53. The difference between their ages is 25. What are their ages? [Only an algebraic solution will be accepted.] Let x = father's age y = Anthony's age x + y = 53 x - y = 25 x + y = 53 x - y = 25 2x = 78 2 2 x = 39 x + y = 53 (39) + y = 53 - 39 - 39 y = 14 Anthony is 14 years old and his father is 39 years old. *These lines are parallel. They have the same slope.* How many solutions did this system No Solution of equations have? ______________ y=6 1 6 m = y­int = +5 1 x ­9 ­8 ­7 ­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6 7 8 9 ­1 ­2 ­3 ­4 ­5 ­6 ­7...
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## This document was uploaded on 03/19/2014 for the course MATH Integrated at Brewster High School.

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