Unit 5 Review

Identify all intervals where the function is positive and negative, where the function is increasing and decreasing.

Groups:

(a) Positive Interval(s)

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(b) Negative Interval(s)

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(c) Increasing Intervals

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(d) Decreasing Intervals

Answer explanation

On a winter day, it is 60° F inside Mai's apartment. The table below shows the temperature in Mai's apartment, F, t minutes after she lights a fire in the fireplace.

• Vertical Reflection Only
• Horizontal Translation Only
• Vertical Translation Only
• Vertical Reflection and Vertical Translation
• Vertical Refl., Horizontal & Vertical Trans
• Vertical Reflection & Horizontal Translation
• Vertical Translation & Horizontal Translation

Determine if each function is even or odd

Groups:

(a) EVEN Functions

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(b) ODD Functions

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Answer explanation

Even means it is symmetrical about the y-axis (I can fold it and it will line up perfectly)

Odd means it has rotational symmetry about the origin (I can rotate it 180 degrees and get the same function)

• -2 and -6
• -6 and -14
• -1 and 1
• 1 and 5
• -14 and -18
• -4 and -1

• Even
• Odd

Which functions are NEITHER even or odd. Select THREE

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Tai uses his graphing calculator to find all the solutions to the equation shown below.

On Tai's graph, select ALL points that represent a solution of the equation.

Francis records the price of a washer-and-dryer pair each week for 5 weeks.  The table shows his data.

What is the rate of change in the price of the washer-and-dryer pair between Week 1 and Week 5?

• -$9.16 / week

• $9.16 / week

• $11.45 / week

• -$11.45 / week