Chapter 7 – Algebra CP

RULES1. Decide which team goes first.

2. Appoint a scorekeeper.

3. Teams answer correctly and earn money. If a team is correct, they can continue until max. 3 times or until they get BAAM!

4. If a team hits BAAM! they go bankrupt!

5. The team with the most money at the end is the winner.

1

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

21 22 23 24 25

2 3 4 5

What is the axis of

symmetry and vertex?

y=-2x2-3x+10 x=-3/4

(-3/4, 89/8)

Say ‘goodbye’

to your

money!

irrational

Irrational or rational?

You are

broke!

2, -2

Solve the equation.

6 (x2 - 2) = 12

Solve the equation.

9 (w2 + 1) = 9W = 9

Where’s

your

money

gone?

Unlucky!

What is the axis of symmetry?

y = x2 + 6x - 2 x = - 3

Oh

dear!

False, there are 2 solutions.

True or false? If it is false, write a true

statement.X2 – 10 = 3, there is 1

solution.

Graph using a table.

y = -x2 + 1

Opens down, vertex at (0,1)

Graph using a table

y = x2 - 4Opens up, vertex at (0, -4)

Oops!

2.3 in

The area of a circle is given by the formula

A=πr2. Find the radius of a circle with area 16 in2 to the nearest

inch.

Use the quadratic formula to solve

2x2 – 7x = -33, 0.5

Rational or irrational?

rational

Discriminant must be

negative.

Write a quadratic equation that has

no solution.

x = -2, -3

Solve the equation

x2 = -5x - 6

Graph y <

x2

x = 3/2

(3/2, -5/2)

Find the axis of symmetry

and vertex.

y = 2x2 – 6x

Simplify

+13

-8 and -7

Which two integers is

between?

You lost

everything

!

x = 12, -12

Solve x2 – 63 =

81

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