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Function Review Lessons 2.1-2.3

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Function ReviewLessons 2.1-2.3

Advanced Math Topics

Mrs. Mongold

- Remember basic rules:
- No negatives in radicals
- No fractions with 0 as the denominator

- Linear Functions:
- In the form y=mx+b
- Domain is ARN unless it’s vertical
- Range is ARN unless it’s horizontal

- Absolute Value:
- Find corner
- Domain is usually ARN
- Range is determined by the y-value of the corner and whether the graph opens up or down

- Piecewise Functions:
- Domain and Range are determined solely by the function so you need to look at the graph to determine
- If you don’t have a graph you need to graph it first!!!

- Domain and Range are determined solely by the function so you need to look at the graph to determine

- f(x)= ½ x – 7
- f(x)= 3x
x-14

- f(x) = √x+11
- f(x) = √x2 + 6

- f(x) = |2x + 5|
- f(x) = 2
x + 3

x + 3 if x<0

- f(x) = 5 if x = 0
2x – 1 if x > 0

8 if x < -4

f(x) = x2 + 1 if -4< x < 4

8 if x > 4

- f(x) = -2x + 6
- f(x) = (x – 2)2
- f(x) = -x + 112

- f(-2) = -10, f(2) = 2
- f(0) = 5, f(7) = 3/2
- f(1) = 8, m = ½

- Pg 610-611/ 3-21 Multiples of 3