Unit 2 Test 1- Algebra

A store offers packing and mailing services to customers. The cost of shipping a box is a combination of a flat packing fee of $5 and an amount based on the weight in pounds of the box, $2.25 per pound. Which equation represents the shipping cost as a function of x, the weight in pounds?

f(x) = 2.25x + 5

Pauley graphs the change in temperature of a glass of hot tea over time. He sees that the function appears to decrease quickly at first, then decrease more slowly as time passes. Which best describes this function?

It is nonlinear because linear functions increase or decrease at the same rate.

Which graph shows a set of ordered pairs that represent a function?

Which graph does not have 2 coordinates that share an X Coordinate? A function can share a Y coordinate such as (3,5) and (9,5) however, (5,4) and (5.7) is not a function

What is the range of the function on the graph? (curved U - shape line with the U point(bottom) at -3 and the top surpasses +5)

all the real numbers greater than or equal to -3

A store offers packing and mailing services to customers. The cost of shipping a box is a combination of a flat packing fee of $5 and an amount based on the weight in pounds of the box, $2.25 per pound. Which equation represents the shipping cost as a function of x, the weight in pounds?

f(x)=2.25x+5

Which equation represents a line that passes through (2, -1/2) and has a slope of 3?

y + 1/2 = 3(x+2)

Consider the function represented by the table. What is f(0)?

4 and 6

A line contains points M(1, 3) and N(5, 0). What is the slope of MN?

-3/4

The soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles. The amount collected can be modeled by the equation 5 x plus 10 y equals 800, where x represents the number of small vehicles and y represents the number of larger vehicles. If the number of larger vehicles washed was 50, how many small vehicles were washed in total?

60

The graph of a relation is shown. A coordinate plane with a straight line. The line starts in the lower left quadrant and continues up through the uppercase right quadrant. The line passes through the y-axis slightly below the origin, and then passes through the x-axis slightly to the right of the origin. Which of these values could be the slope of the line? Select two options.

7/4 and 4. OR 7/4 and 3

Which graph shows a set of ordered pairs that represent a function?

A function can share a Y coordinate such as (3,5) and (9,5) however, (5,4) and (5,7) is not a function because the X coordinates are the same

A coordinate plane with a line passing through (0, negative 3), (2, 0), and (4, 3). Which equation represents the graphed function?

y = 3/2x -3

A coordinate plane with a line passing through (0, negative 3), (2, 0), and (4, 3). Which equation represents the graphed function?

y = 3/2x-3