TEKS.MATH.9-12.II.D.1

A tank is completely filled with water.  A pump is used to drain the tank.  The amount of water remaining in the tank is given by the equation y=600-25x, where x is the number of minutes since the pump started and y is the volume, in gallons, of water remaining in the tank.  In the equation, what are the meanings of the numbers 25 and 600?

• The number 25 is the number of minutes it will take to drain the tank, which holds 600 gallons of water.
• The number 25 is the rate of increase, in gallons per minute, of the flow from the tank, which holds 600 gallons of water.
• The number 25 is the rate of increase, in gallons per minute, in the volume of water in the tank, which started at 600 gallons.
• The number 25 is the rate of decrease, in gallons per minute, in the volume of water in the tank, which started at 600 gallons.

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TEKS.MATH.9-12.II.D.1

TEKS.MATH.9-12.II.A

Which function below matches this graph?

• 2+sec(x)
• sec2(x)
• 2sec(x)
• sec(x-2)

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TEKS.MATH.9-12.II.D.1

TEKS.MATH.9-12.II.D.2

The image provided is the equation of a(n)...

• circle
• ellipse
• parabola
• hyperbola

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TEKS.MATH.9-12.II.D.1

What is the x-intercept shown on the graph?

• (4, -2)
• (0, -2)
• (4, 0)
• (0, 4)

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TEKS.MATH.9-12.II.D.1

What shape does the function y<2x+1 form? 

• straight line with shading
• curved line with shading
• V-shape
• straight line without shading 

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TEKS.MATH.9-12.II.D.1

What is the equation of the blue graph?

• y = 2sin x
• y = sin(2x)
• y = sin(x + 2)
• y = sin x - 2

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TEKS.MATH.9-12.II.D.1

TEKS.MATH.9-12.II.D.2

What is the y-intercept shown on the graph?

• (0, -2)
• (3, 0)
• (0, 3)
• None of these.

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TEKS.MATH.9-12.II.D.1

Are the graphs inverses?

• yes

• no

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TEKS.MATH.9-12.II.D.1

TEKS.MATH.9-12.II.D.2

What is the graph of this function: y = x² - 4x

• 
• 
• 
• 

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TEKS.MATH.9-12.II.D.1

Using the graph, what can we assume about the equation?

• Degree - Even

  Leading Coefficient - Positive

• Degree - Odd

  Leading Coefficient - Positive

• Degree - Even

  Leading Coefficient - Negative

• Degree - Odd

  Leading Coefficient - Negative

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TEKS.MATH.9-12.II.D.1