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