2B Mastery Assignment

Which phrase describes characteristics for the graph of the following equation?

y = -4x – 5

• A line with a negative slope that crosses the x-axis at a negative value.

• A line with a negative slope that crosses the x-axis at a positive value.

• A line with a positive slope that crosses the x-axis at a negative value.

• A line with a positive slope that crosses the x-axis at a positive value.

The graph models the amount of money George saved. Which function models the same relationship?

• $f\left(x\right)\ =\ \frac{3}{2}x+30$

• $f\left(x\right)\ =\ 15x+30$

• $f\left(x\right)\ =\ 30x+\frac{3}{2}$

• $f\left(x\right)\ =\ 30x+15$

1. A line is represented by the equation y = 4x – 7. Which statement about the line is true?

• The y-intercept is 7.

• The point (1,4) lies on the line.

• The line has a positive slope.

• This line is parallel to the line whose equation is y = 2x – 7.

Which graph represents the solution to the inequality?

-4y > 2x + 4

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The graph above shows the amount of profit Julianne earns selling necklaces. Once she has sold at least four necklaces, what amount of profit, in dollars, does Julianne earn for each additional necklace she sells?

• $1.00

• $2.50

• $4.00

• $5.00

1. The graph of the function f(x) = x – 4 is shown above. Using the graph, which characteristic about the function is NOT true?

• The function f(x) is negative when x < 6 and positive when x > 6.

• The line intersects the x-axis at 6.

• As x increases, f(x) always decreases.

• The graph has an end behavior as the x decreases, the y decreases and as the x increases, the y increases.

The graph above describes the labor cost for a mechanic. Which of the following describes the domain of the function?

• All real numbers

• All real numbers greater than or equal to 0

• All whole numbers greater than 1

• All whole numbers greater than 75