1. You can use the vertical line test to determine if a graph is a function or not. To do this, you will
draw a vertical line anywhere on the graph. If that vertical line hits the graph in more than one
spot, it is not a function. If that vertical line on
Kanesha Howard
06 January 2016
1. a) x 214 x+ 45
GCF between 1 and 45 is 9 and 5 because.
-9+-5=14 and (9)(5)=45, so
2
x 9 x+5 x+ 45
x ( x9 )+5 ( x +5 )
( x9 ) ( x5 )
b)
2
x 8 x+15
GCF between 1 and 15 is 3 and 5 because
-5 + -3 = -8 and (3)(5)=15, so
1. A. c = $22,000 + 150x
B. Cost function =
c
x
C. i. First you have to find c so,
c = $22,000 + 150 (100)
c = $22,000 + 15,000
c = 37,000
Then we can plug in c in the cost function equation so,
Cost function =
c
x
Cost function =
37,000
100
Cost function
Kanesha Howard 02/19/16
1. a. A=xy
b. 150 = 2x + y
c. 150 = 2x + y
-2x -2x
-150 2x = y
d. A = x (150-2x)
A = 150x e. f(x) =
2x
2 x
2
2
+ 150x + 0
b
2a
150
=
2 (2 )
150
=
4
f.
= 37.5
g. y = 150 2x
y = 150 2(37.5)
y = 150 75
y = 75
h. Total area = (37.5)(75
1. An everyday situation in the Internet Technology field that is a function would be a domain name
as it relates to the World Wide Web. If you notice, no two domain names are alike. When you
type a domain name in the search bar only one web page is going
1. a) V= 51 + 12
= 5(1) + 12
= 5 + 12
V = 17
b) V= 54 + 12
= 5(2) + 12
= 10 + 12
V = 22
c) V= 536 +12
= 5(6) +12
= 30 + 12
V = 42
d) From 2003 to 2006 the number of viruses didnt increase much, but from 2006
to 2038 the number of viruses almost doubled.
2