APPLICATION
6.1
W rite
L inear
E quations
i n
S lope-‐Intercept
F
orm
Directions: Find the equation of the line for each situation.
1)
2)
( 0,
-‐ 2)
a nd
( 1,
-‐ 4)
3)
M r.
K elly
s tarts
u p
h is
o wn
H ELLO
K ITTY
b usiness.
I t
c osts
h im
$ 10
t o
s tart
u p
a nd
h e
m akes
$ 5
e very
m onth.
a)
W hat’s
M r.
K elly’s
s lope
( rate
o f
c hange)
f or
t his
s ituation?
b)
W hat’s
M r.
K elly’s
y -‐intercept
( initial
v alue)
f or
t his
s ituation?
c)
W rite
a n
e quation
o f
t he
l ine
f or
t he
g iven
s ituation.
G raph
t he
l ine.
d)
H ow
m uch
m oney
w ould
M r.
K elly
h ave
a fter
1 0
m onths?
M r.
B rust
s tarts
u p
a
r ival
H ELLO
K ITTY
b usiness.
A t
t he
b eginning
4)
(0
m onths)
h e
o wes
$ 2.
A fter
3
m onths
h e
h as
$ 1.
a)
W hat’s
M r.
B rust’s
s lope
( rate
o f
c hange)
f or
t his
s ituation?
b)
W hat’s
M r.
B rust’s
y -‐intercept
( initial
v alue)
f or
t his
s ituation?
c)
W rite
a n
e quation
o f
t he
l ine
f or
t he
g iven
s ituation.
G raph
t he
l ine.
d)
H ow
m uch
m oney
w ould
M r.
B rust
h ave
a fter
1 0
m onths?