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Equations and Inequalities

Quick questions on Systems of linear equations - Virginia SOL Algebra I

4short 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=x+1y = x + 1 and 2x+y=72x + y = 7. [2 points]
What is q2?
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How many solutions does a system of two identical lines have? [1 point]
What is sign error in elimination?
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To cancel, the coefficients must be opposites; if they are equal, subtract rather than add.
What are not checking in both equations?
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A point must satisfy both equations; verify in each before typing.

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