Introduction to Functions

Find the function rule.

• y = 2x

• y = 2x+3

• y = 3x+3

• y = -2x+3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the function rule.

• y = -2x +10

• y = -2x -10

• y = 2x +10

• y = 2x-10

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A relation pairs each input with exactly one output is a

• congruence

• similarity

• function

• mathematical equation

Tags

CCSS.8.F.A.1

The left grouping in a mapping diagram is called the...

• domain.

• range.

• y-axis.

• relation.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which of the following represents a function?

• None of the above

Tags

CCSS.8.F.A.1

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Which of the following is a function?

Tags

CCSS.8.F.A.1

The mapping ​ (a)   y as a function of x, because ​ (b)  

• does not represent

• does represent

• each x-value corresponds to more than one y-value

• each x-value corresponds to only one y-value

Which of the following sets represents a function?

Tags

CCSS.8.F.A.1

Which of the following is not a function?