Martin-Gay, Beginning Algebra, 5ed 22 Location of NewportD1 Location of GatlinburgC2 Location of...
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Transcript of Martin-Gay, Beginning Algebra, 5ed 22 Location of NewportD1 Location of GatlinburgC2 Location of...
Martin-Gay, Beginning Algebra, 5ed 22
Location of Newport D1
Location of Gatlinburg C2
Location of Robbinsville A5
Martin-Gay, Beginning Algebra, 5ed 33
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Martin-Gay, Beginning Algebra, 5ed 55
Martin-Gay, Beginning Algebra, 5ed 66
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Martin-Gay, Beginning Algebra, 5ed 99
Determine whether (3, – 2) is a solution of 2x + 5y = – 4.Let x = 3 and y = – 2 in the equation.
2x + 5y = – 4
2(3) + 5(–2) = – 4 Replace x with 3 and y with –2.
6 + (–10) = – 4 Simplify.
– 4 = – 4 True
So (3, –2) is a solution of 2x + 5y = – 4
Example:
Martin-Gay, Beginning Algebra, 5ed 1010
Determine whether (– 1, 6) is a solution of 3x – y = 5.Let x = – 1 and y = 6 in the equation.
3x – y = 5 3(– 1) – 6 = 5 Replace x with – 1 and y with 6.
– 3 – 6 = 5 Simplify.
– 9 = 5 False
So (– 1, 6) is not a solution of 3x – y = 5
Example:
Martin-Gay, Beginning Algebra, 5ed 1111
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Martin-Gay, Beginning Algebra, 5ed 1313