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North CarolinaMathsQuick questions

Systems of Equations and Inequalities

Quick questions on Solving systems of linear equations algebraically - NC Math 1

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Solve y=3xy = 3x and x+y=8x + y = 8. [2 points]
What is q2?
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Solve x+y=7x + y = 7 and xy=1x - y = 1. [2 points]
What are sign error when subtracting equations?
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Subtracting flips every sign in the second equation, just like subtracting polynomials. Distribute the minus carefully.

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