'23-'24 T1 - Test 1 Review

Order of Operation [ P E M D A S ]

100

(5+16)÷7-2=

1

200

3+2²(1+8)=

39

300

(6+3(2)²)÷2=

9

400

(5(16-5)-1)/((4^2)-7) =

6

500

(8^2-2^5)÷(24÷6)+3^2 =

17

Substitution

100

-4x^2+3x-2

Variable: ____________

 X

200

-4x^2+3x-2

Coefficient

-4, +3

300

When x=-4; y=2

-3x^2y+4x

-112

400

When x=4; y=-3

(x^2 - 4y)/2

14

500

When y=2,

-y^2 =

(-y)^2 =

-4

+4

Properties

100

8+6=6+8

Property:

Commutative Property of Addition

200

(3×9)×15=3×(9×15)

Property:

Associative Property of Multiplication

300

8×0=0

Property:

0 Property of Multiplication

400

15y+0=15y

Property:

Additive Identity

500

If xy=x, What's y?

1

Solving One-Step Equations

100

x+5=7

x=2

200

16=4y

y=4

300

u/-28=0

u=0

400

y/40=-1

y=-40

500

5/2x=20

x=8

Solving Two-Step Equation

100

5b-5=5

b=2

200

3=-2c-17

c=-10

300

7s-60=-74

s=-2

400

12-y/3=-2

42

500

 When 9 is subtracted from 5 times a number, the result is 31.

5x-9=31

x=8