Math 8

Linear Relationships

100

y = 4x + 5

The answer is 4.

What is the slope?

200

y = 4x + 5

The answer is 5. 

What is the y-intercept?

300

y = x² + 5

What is nonlinear? 

400

Jarvis has a $3 coupon at a deli.  He buys turkey that costs $8.50 per pound.  Write an equations that model the total amount that Jarvis spends.  

y = 8.50x -3

500

Which has a greater rate of change?

y = 2x + 5

y = 7 + x

y = 2x + 5

Scientific Notation

100

1.256 x 10⁵

125,600

200

1.84 x 10^-4

0.000184

300

(a⁴)(a^-6) 

a^-2

400

What is the product of 

(2.2 x 10⁴)(1.5 x 10³)

3.3 x 10⁷

500

NYC has 8.1 x 10⁶ people.  Los Angelos has 3.8 x 10⁶ people.  What is their combined population in scientific notation? 

1.19 x 10⁷

Solving Equations

100

24 = 2x

x = 12

200

16 + 5x = 36

x = 5

300

3x - 7 = 23

x = 10 

400

2x + 5 = 6x - 5 

10/4 or 2.5

500

3.25x + 1 - 4.25x = -2

x = 3

Systems of Equations

100

Classify as one, no, or infinite solutions. 

x - 8 = -8

x = 0

One solution 

200

Classify as one, no, or infinite solutions. 

4x = 0 

x = 0

One Solution

300

Classify as one, no, or infinite solutions. 

7x + 35 = 7(x + 5) 

35 = 35

Infinite 

400

Classify as one, no, or infinite solutions. 

8 + 3x - 3 = -9 + 3x + 1

No solution

500

6x + 24 = -2x + 4(2x + 5) + 4

Infinite

Transformations

100

An image turns

rotation

200

An image flips

Reflection

300

An image slides

Translation

400

An images gets bigger or smaller

Dilation

500

Does angle size stay the same with reflection, rotation, translations, and dilation?

Yes