Use the imaginary unit to write the expression.

A. 2i 
B. -i
C. ±2 
D. -2i 


Answer: A

Mathematics

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Provide an appropriate response. Shortly before a mayoral election, a market research firm took a poll to find out which candidate people were planning to vote for. The results are shown below.  You wish to construct a graph to represent the data. It should be easy to see from your graph which candidate is in the lead. Which graph would be more useful, a bar graph or a pie chart? Explain your thinking.

What will be an ideal response?

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Evaluate the expression for the given values of the variables, if possible.-11xx = -17

A. -187 B. -198 C. 198 D. 187

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Use the vertical line test to determine if the graph is a function.

A. Yes B. No

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Find the slope of the line. 

A. -4 B. -1 C. 1 D. 4

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