Unit 4 Practice

Vocabulary

100

What is a variable?

A mathematical object that stands for a number.

200

What is a coefficient?

A number that multiplies a number.

300

What is a constant?

A number by itself.

400

What is an expression?

An expression is multiple terms with no equal sign.

500

What is an equation?

two expressions that are equal to each other using an equal sign.

One Step Eq

100

x+4=8

What is x?

x=4

200

x-23=82

What is x?

x=105

300

3x=39

What is x?

x=13

400

15x=135

What is x?

x=9

500

(x/4)=6

What is x?

x=24

Two Step Eq

100

2x+4=10

What is x?

x=3

200

3x-2=13

What is x?

x=5

300

-2x+1=9

What is x?

x=-4

400

(x/4)+2=10

What is x?

x=32

500

2x+1=x+4

What is x?

x=3

Coding

100

What code do we use to look for a variable?

scanf

200

What code do we use to have the computer write out a line of code?

printf

300

What code is it to have the computer make a decision?

if-else

400

What code is it for the robot to turn left?

turnLeft

500

What is an controlling expression?

It is set parameters we use for an if-else statement.

Mr. Brock/Combing Like Terms

100

What is Mr. Brock's first name and combine the like terms?

3x+1+2x

Justin and 5x+1

200

What is Mr. Brock's middle name?

Combing Like Terms

3x+2y+y

Alexander

3x+3y

300

What car does Mr. Brock drive?

2x+2y+x+2y

Toyota 4runner

3x+4y

400

How old is Mr. Brock?

7x-2y+3y-2x

27

5x+y

500

How many siblings does Mr. Brock have?

2x+3y+2b+b+4x

One Sister

6x+3y+3b