Algebra Review 1

PEMDAS

100

8 + 3(4)

20

200

5 + 2(6-3)

11

300

18 / 3 + 4

10

400

3² - 24 / 6

5

500

(7 - 4)² - 2²

5

Vocabulary

100

What is a letter that represents an unknown value?

Variable

200

What do we call it when we have more than 1 equation?

System of Equations

300

What is the name for the point where a line crosses the Y-axis?

Y-Intercept

400

Is this an equation?

2x² - 13x + 7

No, there is no =

500

What is the property that says this is true: 2 + 3 = 3 + 2

Commutative Property of Addition

Solve For X

100

13 + x = 21

x = 8

200

7x = 56

x = 8

300

2x + 12 = 30

x = 9

400

2(x - 5) = 24

x = 17

500

30 - 3(x + 1) = 9

x = 6

Linear Equations and Systems

100

Solve for Y:

3Y - 9X = 18

Y = 6 + 3X

200

Solve for Y: 

3X - 2Y = 14

Y = 3/2 X - 7

300

Solve the System:

Y = X + 1

Y = 4

(3, 4)

400

Solve the System:

Y = -3X - 5

Y = 2X

(-1, -2)

500

Solve the System:

2X + Y = 13

X - Y = 2

(5, 3)

Random

100

What is the slope of this line?

Y = 2X - 1

m = 2

200

Which ordered pair is on the line Y = 2X + 3?

A. (1, 4)

B. (2, 7)

C. (3, 8)

B. (2, 7)

300

What is the equation of line with a slope of -2 and a y-intercept of 6?

Y = -2X + 6

400

A gym charges $15 for a sign-up fee and $10 per month. What is an equation for the total cost Y after X months?

Y = 10X + 15

500

Simplify:

(5x² - x + 4) - 3(x² - x - 2)

2x² + 2x + 10