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Built-In Calculator, Graphing, and Table Tools
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PSAT Prep
007 Built-In Calculator, Graphing, and Table Tools
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The table image gives values for f(x)=2x
2
-7x-5. Which next calculator action best locates the positive zero?
A
Refine between x=-1 and x=0 because that is always the positive zero.
B
Use only x=3 because the output is negative there.
C
Change the equation to f(x)=2x
2
+7x-5 before graphing.
D
Refine the table between x=4 and x=5 with a step of 0.1.
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