vocab
what is a function?
A relation where each input has exactly one output
What is the domain of f(x)=2x+3
all real numbers
all real #s
(6−i)−(2+4i)
4−5i
(5x+7)+(4x+18)
(9x+25)
what is the name of The point where a graph crosses the x-axis.
X-intercept
Find the domain of f(x)=(x−2)2
All real numbers.
3(2+5i)
6+15i
(5x3−2x+7)−(3x3+x−4)
2x3−3x+11
what test is used to determine if a graph represents a function.
Vertical Line Test
Find the range of f(x)=(x−2)2+3
y≥3
(5+i)(5−i)
26
(2x−1)(x+4)
2x2+7x−4
the stretch or compression of a graph is called a
Dilation
A graph ends at (6,0) and (−2,0). What’s the domain?
2≤x≤6.
(1+2i)(3+4i)
−5+10i
(x+2)2
x2+4x+4
Shifting a graph up, down, left, or right is called a
Translation
Find the range of f(x)=−x2+4
y≤4.
Simplify:i243
-1
(x2+2x−8)÷(x+4)
x−2