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Math 113
Function Notation and Graphing
Question | Answer |
---|---|
f(x)=x+2 Which way does it move and how many places? | it goes up 2 places! |
f(x)=(x+5)^2-3 Which way does it move and how many places? | It moves to the left 5 places and down 3 places |
What is the square root of 9? | 3! |
What is the square root of 25? | 5 |
What is the square root of 144? | Its 12! |
What is the square root of -36 | There is no real number |
What the the negative square root of 64 | -8 |
f(x)=x-10 What way does it move and how many places? | Down 10 places |
f(x)=x^2 What shaped is it? | Parabola |
f(x)=lxl What shaped it is? | V-shaped |
Graph f(x)=lxl | If x is -3, then f(-3) = l-3l or 3 if x is -2, then f(-2) = l-2l or 2 if x is 2 , the f(2) = l2l or 2 Remember f(x) = lxl is V-shaped! |