Math 8 Unit 4 Review

____1.Complete the input-output table for the function .

Input / Output
2 / ?
? / 5
3 / ?
? / 9
a. / / c. /
b. / / d. /

____2.Make an input-output table for the function y = 2x + 4. Use x-values of 1, 2, 3, 4, and 5.

a. / / c. /
b. / / d. /

____3.Which function rule matches the input-output table?

Input, x / 1 / 2 / 3 / 4 / 5
Output, y / 7 / 11 / 15 / 19 / 23
a. / / b. / / c. / / d. /

____4.For which value of x is the relation not a function?

{(0, 1), (x, 0), (3, 5), (2, 6)}

a. / 1 / b. / 3 / c. / 4 / d. / 6

5.Find the range of the function.

Input / Output
1 / 11
9 / 6
4 / 5

6.Does the input-output table represent a function? If it does represent a function, list the domain and range.

Input / 3 / 4 / 5 / 6
Output / 14 / 19 / 24 / 29

7.Decide whether the information defines a function. If it does, state the domain of the function.

Input / 0 / 1 / 2 / 3 / 4
Output / 1 / 2 / 3 / 2 / 1

8.Decide whether the information defines a function. If it does, state the domain of the function.

Input / a / b / c / d
Output / 0 / 1 / 0 / 1

9.Does the input-output table represent a function? If it does represent a function, list the domain and range. If it does not represent a function, explain why.

Input / 1 / 2 / 3 / 4
Output / 6 / 7 / 8 / 9

Determine whether the relation is a function.

10.

Math 8 Unit 4 Review

Answer Section

1.ANS:BPTS:1DIF:Level BREF:MALG0198

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:function | relation

BLM:ComprehensionNOT:978-0-618-65612-7

2.ANS:APTS:1DIF:Level BREF:MALG0203

TOP:Lesson 1.6 Represent Functions as Rules and Tables

KEY:graph | output | function | table | inputBLM:Knowledge

NOT:978-0-618-65612-7

3.ANS:BPTS:1DIF:Level BREF:MALG0205

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:output | function | table | input

BLM:ComprehensionNOT:978-0-618-65612-7

4.ANS:BPTS:1DIF:Level B

REF:7f1df655-cdbb-11db-b502-0011258082f7

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:relation | function

BLM:KnowledgeNOT:978-0-618-65612-7

5.ANS:

The range is the collection of the output values: 11, 6, and 5.

PTS:1DIF:Level BREF:MALG0193

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:domain | range | relation

BLM:KnowledgeNOT:978-0-618-65612-7

6.ANS:

Yes, the table does represent a function. The collection of the input values is the domain: 3, 4, 5, and 6; and the collection of output values is the range: 14, 19, 24, and 29.

PTS:1DIF:Level BREF:MALG0194

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:equation | function | table

BLM:KnowledgeNOT:978-0-618-65612-7

7.ANS:

It does. Domain: 0, 1, 2, 3, 4

PTS:1DIF:Level BREF:MALG0195

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:function | domain | determine

BLM:KnowledgeNOT:978-0-618-65612-7

8.ANS:

It does. Domain: a, b, c, d

PTS:1DIF:Level BREF:MALG0196

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:function | determine | input | output

BLM:KnowledgeNOT:978-0-618-65612-7

9.ANS:

Yes, the table does represent a function. The collection of the input values is the domain: 1¸ 2¸ 3¸ and 4; and the collection of output values is the range: 6¸ 7¸ 8¸ and 9.

PTS:1DIF:Level BREF:MALG0199

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:equation | function | table

BLM:ComprehensionNOT:978-0-618-65612-7

10.ANS:

The relation is not a function.

PTS:1DIF:Level AREF:7f1e1d65-cdbb-11db-b502-0011258082f7

TOP:Lesson 1.6 Represent Functions as Rules and TablesKEY:relation | function

BLM:KnowledgeNOT:978-0-618-65612-7