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Week 7 DQ 4

# Week 7 DQ 4 - Now we can substitute 2y 3 for x = 22y 3 3y...

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Week 7 Discussion Question: Substitution Method Post to the Main Forum Address the following: Provide an example that uses the substitution method to solve two linear equations. Participate by checking the work of your classmates and comment on whether it is correct. Substitution Example : = + x 2y 3 + = 2x 3y 13 Find the ordered pair solution

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Unformatted text preview: Now, we can substitute 2y + 3 for x. + + = 22y 3 3y 13 + + = 4y 6 3y 13 + = 7y 6 13 = 7y 7 = y 1 Now, we can plug in 1 for y and get x. = + x 2y 3 = + x 21 3 = x 5 The ordered pair is (5, 1) Let’s perform a check with the second equation. + = 2x 3y 13 + = 25 31 13 + = 10 3 13 = 13 13 The solutions work!...
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