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TennesseeMathsQuick questions

Functions

Quick questions on Function notation, domain, and range - TNReady Algebra I

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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If f(x)=2x−7f(x) = 2x - 7, find f(5)f(5). [1 point]
What is q2?
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Is {(2,1),(3,4),(2,5)}\{(2, 1), (3, 4), (2, 5)\} a function? [1 point]
What is sign error squaring a negative?
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f(−2)f(-2) with x2x^2 gives (−2)2=+4(-2)^2 = +4, not −4-4.

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