what is a function
A relationship between input and output values.
Evaluate f(x)=-3x if x=2
-6
5h + 2 + 2h = 23
h=3
what is the slope of y=4x + 6
4
4x > 24
x > 6
Is it a function? {(2, 3), (4, 5), ( -2, 6)}
yes
Evaluate f(x)=2x+1 if x=-2
-3
3b + b - 8 = 4
b=3
find the slope of
(3,0) (3,4)
undifined
m/3 ≤ 12
m ≤ 36
Using the vertical line test does the graph of the points (1,3) and (1,5) represent a function?
false
Evaluate f(x)=-3 - x if x=6
-9
7(4 - t) = -84
t=16
what is the slope of y=9x
9
x + 7 < 8
x < 1
A relation that assigns exactly one value in the range to each value in the domain?
is a function
Evaluate f(x)=25 + 4x if x=5
45
78 = 3c + 12 - c + 4
c=31
what is the slope of 3x + y = 8
-3
b - 9 ≥ -20
b ≥ -11
The test to tell if a graph is a function
vertical line test
Evaluate f(x)=-(4x+2) if x=7
-30
-13(4 + 2a) = 208
a=-10
what is the slope of
4x +2y = 6
-2
-2x < 18
x > -9