Algebra 1 Keystone Module 2 Practice Test (2020)

A graph of a relation is shown.

Removing which line segment from the graph would make the relation a function of x?

• . the line segment with endpoints (ˉ4, ˉ2) and (ˉ3, 2)

• . the line segment with endpoints (ˉ3, 2) and (3, 3)

• the line segment with endpoints (3, 3) and (4, ˉ3)

• the line segment with endpoints (4, ˉ3) and (ˉ4, ˉ2)

Which set of ordered pairs is a function?

• {(ˉ10, 4), (ˉ8, 3), (ˉ8, 2), (ˉ4, 1)}

• {(ˉ2, 4), (0, 4), (2, 4), (2, 6)}

• {(1, 5), (1, 6), (2, 7), (3, 8)}

• {(ˉ1, 1), (0, 0), (1, 1), (2, 2)}

The set of ordered pairs shown below is a relation that is a function of x.

{( ˉ5, 1), ( ˉ4, 1), ( ˉ3, 1), ( ˉ2, 1)}

Which ordered pairs could be included in the set so that the relation remains a function of x?

• ( ˉ6, 1) ( ˉ5, ˉ1)

• (ˉ6, 1) ( ˉ1, ˉ1)

• ( ˉ2, 2) ( ˉ1, 1)

• ( ˉ3, 0) ( ˉ1, 1)

The set of ordered pairs below is a relation.

{(0.5, 2), (1.5, 5), (4.0, 12), (6.5, 15)}

Which relation has the same domain as the given relation?

• {(1, 5), (2, 2), (ˉ3, 15), (ˉ8, 12)}

• {(0.5, 1), (1.5, 4), (4.0, 11), (6.5, 14)}

• {(2, 1.1), (5, 2.2), (12, 3.3), (15, 4.4)}

• . {(ˉ1, 6.5), (ˉ3, 1.5), (ˉ6, 4.0), (ˉ10, 0.5)}

Laura drove her car on three trips. She began each trip with a full tank of fuel in her car. The table shows the relation between the distance driven on each trip and the amount of fuel remaining in the car’s fuel tank at the end of the trip.

What is the range of the relation in the table?

• {8, 10, 15}

• {60, 160, 200}

• {all whole numbers from 8 through 15}

• . {all whole numbers from 60 through 200}

A function models the height ( y), in feet, of a car on a roller coaster based on the time ( x), in seconds. The range consists only of positive numbers less than 100. Which graph could represent the function?

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Chef Bailey measured the internal temperature of a whole chicken during the first 60 minutes of cooking time. The pattern in the temperatures she measured is shown in the table.

The pattern continues. Which graph best represents the pattern?

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A pattern in Shannon’s phone charges is shown in the table below.

The pattern continues. Which graph represents the pattern in the charges?

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A teacher buys some pencils.

• He buys 2 pencils for each of his students.

• He buys 10 additional pencils.

• Each pencil costs $0.10.

Which equation describes the total amount of money (y), in dollars, that the teacher spends on pencils as a function of the number of students (x) he has?

• y = 1.20x

• y = 2.00x

• y = 0.20x + 1

• y = 0.10x + 12

The table below represents a function of x

Which equation describes the function?

• y = -2x + 12

• y = -2x + 24

• y = 2x + 12

• y = 2x + 24