Expressions and Equations +review

Vocabulary

100

This type of math problem has no equal sign.

Expression

200

This type of math problem has an equal sign.

Equation

300

Another word for numbers used in expressions and equations

Constant

400

Another word for the letters used in expressions and equations.

Variable

500

A number next to a variable, like the 4 in 4x

Coefficient

Solving Equations

100

4x = -40 

=-10

200

-x / 3 = 20 

x = -60

300

8x - 30 = 50 

x = 10 

400

8n + 7 = 31

x= 3

500

-10 = 10 (k-9) 

x=8

Slopes and y-intercepts

100

What is the slope in the equation

y =2/3x

2/3

200

What is the y-intercept of this line? 

y=3x-7

-7

300

What is the y intercept?

y=4x

0

400

What is the slope? 

2y=4x+8

2

500

What is the y-intercept? 

3y+9=x

-3

Simplify Expressions

100

Simplify 2b + (-4b) - 10 + 6

-2b - 4

200

7(1-8n)

7-56n

300

7(5n-8) + 6(4+6n) 

71n - 32

400

9(m+8) + 11(3m+4)

42m + 116

500

1+5p+2p²-7p+9-5p²

-3p²-2p+10

Random Review

100

What is the perimeter of a rectangle that has a length of 5.3cm and a width of 2.2cm?

15

200

On a coordinate plane, the point (0,0) is called the ________. 

Origin

300

I rollerbladed 4 2/3 miles.  

My friend ran 4.6 miles.  

Who went farther?  

Me!   4.66666...

400

An acute angle is an angle less than 90 degrees.  

What do you call an angle that's between 90 and 180 degrees? 

Obtuse

500

What number is half of the sum of five and nine multiplied by six? 

42