4.1/4.2/4.9 Flashcards Preview

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Flashcards in 4.1/4.2/4.9 Deck (12):
1

Parent function for quadratic

Y=x^2

2

Graphing y=ax

A* whatever the x value is

3

Comparing parent quadratic to y=ax+c

|a|>1=stretch
|a|<1= shrink
A<0 reflection
C is vertical shift

4

Standard form for quadratic a

Y= ax^2+bx+c

5

How to graph Y= ax^2+bx+c

A>o opens up
A

6

How to find max and minimums of Y= ax^2+bx+c

-(b/2a)
Plug in x and find y
If a0 opens up so minimum

7

Vertex form for quadratic

Y=a(x-h)^2+k

8

What do the variables represent in Y=a(x-h)^2+k

A is opening up or down
H is horizontal shifts
K is vertical shifts
Vertex is h k

9

What is intercept form of quadratic

Y=a(x-p)(x-q)

10

What do the variables represent in Y=a(x-p)(x-q)

P and Q are x intercepts
Axis of symmetry P+Q/2
Vertex find x, then plug in for y

11

What does foil represent

First
Outer
Inner
Last

12

How do you change from intercept to standard
Y=a(x-P)(x-q) to y=ax^2+bx+c

Foil