Math 9 Jeopardy

Unit 4Linear Relations

100

What makes a relation between 2 variables linear?

When there is a constant change in both variables

200

Give an example of a discrete set of data.

I.e. the number of channels on a TV, population, day of the week, elements on the periodic table, etc.

300

What is the general name of the form of equations written as  y = mx + b?

Slope-intercept form

400

Given the following equations: y = 2, 2x - y = 6, and  x = -4 ... which one will create a horizontal line, which one will create a vertical line, and which one will create an oblique line?

horizontal: y = 2

vertical: x = -4

oblique: 2x - y = 6

500

What are the 2 strategies when extrapolating data?

1. Extend the line

2. Create an equation from a table of values

Unit 1Square Roots and Surface Area

100

Which of the following are perfect squares?

2, 9, 16, 32, 49, 70, 111, 144, 196

9, 16, 49, 144, 196

200

What 2 perfect squares would you use on a benchmark to estimate the square root of 103.

100 and 121

300

The square root of a perfect square decimal is either a ___________ decimal or a ___________ decimal. Fill in the blanks.

terminating decimal or a repeating decimal

400

Determine the number whose square root is 4/9

16/81

500

A square has an area of 144/25 cm². What is the perimeter of the square?

48/5 cm

Unit 5Polynomials

100

What is the degree of the following polynomial?

3x² - 2x + x⁴ - 10 

4

200

What is the opposite of the following polynomial: 

-7x + 5

7x - 5

300

Simplify the following polynomial: 

x² + 3x - 4x² - 2x + 10 - 8

-3x² + x + 2

400

What is the following product?

(4x)(2x² - x - 3) = ?

8x³ - 4x² - 12x

500

What is the quotient of the following polynomial?

(12x³ + 3x² - 33x) / (-3x)

-4x² - x + 11

Unit 2Powers and Exponent Laws

100

Evaluate 159⁰

159⁰ = 1

200

What is the base in the following expression?:

-6³

6

300

What is -2⁴?

-16

400

Evaluate [(-8)² - (-2)³]

56

500

Write the following expression as a single power:

(3⁴)⁵ / (3)^-2

3²²

Unit 3 Rational Numbers

100

The set of numbers starting with {1, 2, 3, 4, ....} are called what?

Natural numbers

200

is 0.656565656565... a rational or an irrational number? Why?

rational, because it is a repeating decimal.

300

Give an example of an irrational number (not in decimal form)

i.e. the square root of 3, the square root of 90, pi

400

Evaluate (-3/10) - (-16/10)

13/10

500

Evaluate the following equation (Your answer needs to be in simplest form):

**HINT: Use cross cancelling technique!!

(9/16)*(14/3)

21/8