Chapter 9 Test review

Quadratic Formula

101

What is the Quadratic formula?

A formula for solving quadratics

200

2m²+2m-12=0

2 and -3

300

b²-4b+4=0

2

400

2x²-3x=5

2.5 and -1

500

2m²-7m-13=-10

3.886 and -0.386

Solving inequalities

101

When do you change the direction of the inequality?

When you multiply OR Divide by a negative number

200

0>3x-3-6

x<3

300

0<=2n+3n

n>=0

400

3-2(n-4)> -1

n<6

500

-2(x+1)+4<10

x>-4

Graphing inequalities

101

When do you have a solid line versus a dotted line?

Dotted for less than or greater than

solid for the other two

200

How can you tell where to shade?

Above the line for greater than or greater than or equal to.

Below for less than or less than or equal to

Plug in a point and see if it makes the solution true

300

y > 2x-5

slope of 2 with y int at 5

dotted line shading above

400

y<=3/2x-5

y int -5 slope of 2/3 

solid line shaded above

500

y > 2x-5

y > -x-5

shading on top of both lines.

Things

101

What chess piece moves in an "L" shape?

Knight

200

The powerhouse of the cell is the?

mitochondria 

300

Graph the parabola 

y greater than x²-x+6

X ints at (-2,0) and (3,0)

vertex at (.5, -6.25)

dotted and shaded above

400

There are 37 apples in a basket. You walk away with 8 apples. How many apples do you have?

8

500

There are four brothers in a room:

One is making tik toks,

One is playing chess

One is watching tv,

what is the fourth brother doing?

Playing chess

and Stuff

101

What state is the "Show me state"?

Missouri

200

Iowa produces more of this than any other state

corn

300

 It’s the only place in the world where today comes before yesterday. Where is it?

The dictionary

400

Solve

20x²-30x=2x+45

2.5 or -0.9

500

Which word becomes shorter when you add two letters to it?

short