Vocabulary
What is a function?
A relation where each input has exactly one output
Solve: x+2>5
x>3
What is the domain of f(x)=x+2
All real numbers
What does f(x)=x+3 do?
Moves graph up 3 units
What are domain numbers?
Solve: x−4<6
x<10
What is the range of f(x)= x^2?
y≥0
What does f(x)=x−2 do?
Moves graph right 2 units
What does “absolute value” mean?
The distance from zero on the number line
Solve: 2x≤8
x≤4
Domain of f(x)=1/x
All real numbers except x≠0
What does f(x)=−x do?
Reflects graph over x-axis
What is a variable
A letter that stands for a number
Solve: −x>3
x<−3
Range of f(x)=-x^2?
y=0
What does f(x)=2x do?
Makes graph steeper
What is a coefficient
A number multiplied by a variable in an expression
Solve: ∣x−2∣=6
x=8x = 8 or x=−4
What is the domain of f(x)=1/x-3
All real numbers except x≠3
what does f(x)=−x+4 do?
Reflects over the x-axis and shifts up 4 units