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Flashcards in 4th 9wks Vocab Deck (29)
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1

What are the three forms of a linear equation?

Point slope, slope intercept, and standard

2

What is the slope formula?

M=y2-y1
----------
X2-X1

3

What is the midpoint formula?

X1+X2 Y1+Y2
-------- ---------
2 2

4

Know the distance formula

Ok

5

What is the X intercept for any graph?

Where it crosses the X axis

6

What is the Y intercept for any graph?

Where it crosses the Y axis

7

How can you tell the direction of a quadratic graph?

Looking at a

8

How do you find the vertex of a quadratic graph?

X= -b
---
2A

Plug in X to get Y

9

What is the graph of a quadratic called?

A Parabola

10

What are the four steps in factoring?

GCF, grouping if there's 4 terms, box/trinomial, special cases

11

What are the four ways to solve a quadratic equation?

Roots, factoring, completing the square, quadratic formula

12

What are the four ways to solve a system of linear equations?

Graphing, substitution, elimination, linear combination

13

What are the three outcomes to a system of linear equations?

Ordered pair, zero with a line through it, same line

14

What is absolute value?

The distance from zero on the number line

15

Two numbers that are the same distance from zero are called what?

Opposites

16

What is the number one rule of factoring?

GCF

17

How many roots do you get if you are taking an even root?

2

18

You cannot take an even root of which type of number?

A negative

19

When you are simplifying radicals, how can you tell if the answer is rational or irrational?

No radical sign, _/, means it's rational and vice versa

20

What must match in order to add radicals?

The radicands

21

What is an imaginary number?

Square root of a negative number

22

What does i represent?

_/-1

23

What is the cycle of i?

i, -1, -i, 1

24

How many roots do you get if you are taking an odd root?

1

25

Can you take an odd root of a negative number?

Yes

26

What is the term for the number under the radical?

Radicand

27

What does it mean to rationalize and radical expression

Converting the denominator to a rational number

28

What are two other names for the roots of a quadratic equation?

Zeros and intercepts

29

What are the four things that you can do with an expression?

Evaluate, multiply by one, simplify, add zero