Chapter 7 – Algebra CP

RULES 1. 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.

What is the axis of symmetry and vertex? y=-2x 2 -3x+10 x=-3/4 (-3/4, 89/8)

Say ‘goodbye’ to you r money!

irrational Irrational or rational?

You are broke!

2, -2 Solve the equation. 6 (x 2 - 2) = 12

Solve the equation. 9 (w 2 + 1) = 9 W = 9

Where’s your mo ney gone?

Unlucky!

What is the axis of symmetry? y = x 2 + 6x - 2 x = - 3

Oh dear!

False, there are 2 solutions. True or false? If it is false, write a true statement. X 2 – 10 = 3, there is 1 solution.

Graph using a table. y = -x Opens down, vertex at (0,1)

Graph using a table y = x Opens up, vertex at (0, -4)

Oops!

2.3 in The area of a circle is given by the formula A=πr 2. Find the radius of a circle with area 16 in 2 to the nearest inch.

Use the quadratic formula to solve 2x 2 – 7x = -3 3, 0.5

Rational or irrational? rational

Discriminant must be negative. Write a quadratic equation that has no solution.

x = -2, -3 Solve the equation x 2 = -5x - 6

Graph y < x 2

x = 3/2 (3/2, -5/2) Find the axis of symmetry and vertex. y = 2x 2 – 6x

Simplify +13

-8 and -7 Which two integers is between?

You lost everything!

x = 12, -12 Solve x 2 – 63 = 81