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Relations and Functions

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Mathematics

8th Grade

CCSS covered

Used 1+ times

Relations and Functions
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15 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Identify the domain of the relation: {(-6,14), (0,32), (2,38), (4,44)}

{-6, 0, 2, 4}

{0, 2, 4, 14}

{-6, 2, 4, 14}

{0, 14, 32, 38}

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is an example of a function?

f(x) = 2x + 3, where each x-value corresponds to one y-value.

f(x) = x^2 + 1, which has multiple y-values for a single x-value.

f(x) = 3, which is a constant function with no variable.

f(x) = x + y, which is not a function because it has two variables.

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the difference between a relation and a function?

A relation can have multiple outputs for a single input, while a function has exactly one output for each input.

A relation is always a function, but a function is not always a relation.

A function can have multiple inputs for a single output, while a relation cannot.

A function is a type of relation that can have no outputs.

Tags

CCSS.8.F.A.1

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the vertical line test?

A method to determine if a graph represents a function; if a vertical line intersects the graph at more than one point, it is not a function.

A technique used to find the slope of a line on a graph.

A way to measure the area under a curve in calculus.

A test to check if a graph is symmetrical about the y-axis.

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What does it mean for a function to be one-to-one?

A function is one-to-one if each output value (y) is associated with exactly one input value (x).

A function is one-to-one if it has at least one output value for every input value.

A function is one-to-one if it can be graphed as a straight line.

A function is one-to-one if it is defined for all real numbers.

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the significance of the ordered pairs in a relation?

Ordered pairs indicate the relationship between the input (x) and output (y) values.

Ordered pairs are used to represent the area of a geometric shape.

Ordered pairs are only relevant in linear equations.

Ordered pairs can be rearranged without changing their meaning.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the notation for the range of a function?

R(f) or the set of y-values

R(f) only

The set of x-values

f(x) values

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

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