Practice: Do Now

Which expression is equivalent to:

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The function f(x) = x was transformed to form g(x) = f(x) – 23. Which statement is true about the graphs of f and g?

• The graphs of f and g are not parallel, and the graph of f is translated 23 units up to create the graph of g.
• The graph of f and g are not parallel, and the graph of f is translated 23 units down to create the graph of g.
• The graphs of f and g are parallel, and the graph of f is translated 23 units up to create the graph of g.
• The graph of f and g are parallel, and the graph of f is translated 23 units down to create the graph of g.

The graph of the quadratic function is shown. What are the x-intercepts of the function?

An artist bought a set of 10 paintbrushes that contained x small paintbrushes and y large paintbrushes. The number of small paintbrushes in the set was 4 times the number of large paintbrushes in the set. Which system of equations can be used to find the numbers of small paintbrushes and large paintbrushes in the set?

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Which graph represents the function?

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For quadratic function, f, the solutions to the equation f(x) = 0 are x = 7/5 and x = - 2/3. Which function could represent f?

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A store manager adjusts the price of an item each week that the item goes unsold. The price of the unsold item, in dollars, after x weeks can be modeled by the exponential function:

• B, A, A
• B, B, A
• A, B, B
• C, B, C

Which expression is equivalent to __ ?

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A fish tank is being drained at a constant rate. The graph shows the linear relationship between the volume of water in the fish tank in liters and the time in minutes the tank has been draining. Which value best represents the rate of change of the volume of water in the fish tank with respect to time?

• -6 L/min
• 6 L/min
• -1/6 L/min
• 1/6 L/min

What is the solution set for 12 – 4w > 2(w – 18)?

• w > 8
• w < 5
• w < 8
• w > 5