Algebra Wrap-up!

PEMDAS

100

3 + 4 x 5

23

200

7 + (2 x 4) - 1

14

300

56 ÷ (4+4) + 3²

16

400

20 – (5+3) x 2 + 4

8

500

(5 x 4) – 6 ÷ 2 + 9

26

Two-Step Equations

100

x/2 + 4 = 12

x = 16

200

-2x - 63 = 47

x = -55

300

(3/4)x + 5 = -4

x = -12

400

8 + 5n - 6 = 37

n = 7

500

3(6 - y) = 27

y = -3

Graphing Equations

100

What represents the y-intercept in y = mx + b?

b

200

What represents the slope in y = mx + b?

m

300

What represents our input in y = mx +b?

x

400

What represents our output in y = mx + b?

y

500

How do we calculate the slope of a line?

m = (y₁-y₂)/(x₁-x₂)

OR

rise over run

Inequalities

100

-20x ≥ -100

x ≤ 5

200

m/13 ≤ -4

m ≤ -52

300

When you multiply or divide both sides of an inequality by a negative number, you must __________the inequality sign.

flip

400

x/4 - 6 ≤ -10

x ≤ -16

500

-8 > (5x + 4)/7

x < -12

Extras

100

312¹

312

200

What is the acronym we use to solve two-step equations?

SADMEG

(Subtraction/Addition, Multiplication/Division, Exponents, Grouping)

300

What is the slope of a horizontal line?

m = 0

400

What is the slope of a vertical line?

m = undefined

500

Explain what domain and range are.

Domain is the x values of a function

Range is the y values of a function