E
e
.
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acc
iows
discounted
otee price
peyton has joined the a frequent coffee buyer program with a local cafe. the
program costs $20 per month which allows her to get a discounted coffee price of
$1.5 per cup. answer the questions below regarding the relationship between the of
number of cups of coffee purchased and the total monthly cost.
le
+
o h
-
.
=
=
-
el
- este
et
t
-
-
-
l
=
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d
the independent variable, x, represents the
and the dependent variable is the
-
des
2
-
, because the
tem
12 let
depends on the
stesse
-
alles
=
est
=
tel
-
e
-
-
+
legende
-
le
-
eerste
-
a function relating these variables is a(x) =
es
indi
so a(20) =
sed_these
siti
, meaning 20

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3