Functions Review

TRUE OR FALSE:

"All Functions are relations."

• True

• False

Which of the following set of ordered pairs is NOT a function?

• f = { (1,4), (2,5), (3,6),...(x , x+3)}

• g = { (1,1), (2,4), (3,9), (4,16), (5,25),...}

• h = {(3,1), (3,2), (3,3), (3,4)}

• j = { (1,0), (2,3), (3,8),...(x, x² -1)}

TRUE OR FALSE:

"Horizontal line test is used to

determine whether it

is a function or not.

• TRUE

• FALSE

These are functions that can only be

described by more than one formula,

depending on the value

of the independent variable.

• Piecewise Function

• Linear Function

• Logarithmic Function

• Rational Function

In the ordered pair (x,y),

x is called as ________.

• Range

• Domain

• Function

• Relation

Is the graph a function? Why or why not?

• It is a function, because no vertical lines hit it twice.

• It's not a function, because a vertical line hits it twice.

• It's not a function, because no vertical lines hit it twice.

• It is a function, because a vertical line hits it twice.

Tags

CCSS.8.F.A.1

CCSS.8.F.B.5

Which set of values is a function?

• a = {(9,5) (10,5) (9,-5) (10,-5)}

• b = {(3,4) (4,-3) (7,4) (3, 8)}

• c = {(6,-5) (7, -3) (8, -1) (9, 1)}

• d = {(2, -2) (5, 9) (5, -7) (1, 4)}

• Yes

• No