CHAPTER THREE REVIEW
QUESTION ONE
SOLVE THE SYSTEM.

x  y  2

2
x

y

8


QUESTION ONE
SOLVE THE SYSTEM.

x  y  2

2
x

y

8


Solution: (2, 4)
QUESTION TWO
SOLVE THE SYSTEM.
 x  y  1

2x  2y  3
QUESTION TWO
SOLVE THE SYSTEM.
 x  y  1

2x  2y  3
Solution: No solutions.
QUESTION THREE
SOLVE THE SYSTEM.
3x  y  2

y  2x  3
QUESTION THREE
SOLVE THE SYSTEM.
3x  y  2

y  2x  3
Solution: (1, 5)
QUESTION FOUR
SOLVE THE SYSTEM.

2x  3y  1


5 x  4y  6
QUESTION FOUR
SOLVE THE SYSTEM.

2x  3y  1


5 x  4y  6
Solution: (2, -1)
QUESTION FIVE
SOLVE THE SYSTEM.
3x  5y  11

2x  4y  10
QUESTION FIVE
SOLVE THE SYSTEM.
3x  5y  11

2x  4y  10
Solution: (-3, 4)
QUESTION SIX
SOLVE THE SYSTEM.
2x  2y  10

x  y  5
QUESTION SIX
SOLVE THE SYSTEM.
2x  2y  10

x  y  5
Solution: Infinitely many solutions
QUESTION SEVEN
SOLVE THE SYSTEM BY GRAPHING.
y  2x  7

x  2y  6
QUESTION SEVEN
SOLVE THE SYSTEM BY GRAPHING.
y  2x  7

x  2y  6
QUESTION EIGHT
In one day a museum admitted 321 adults and
children and collected $1590. The price of
admission is $6 for an adult and $4 for a child.
How many adults and how many children
were admitted to the museum that day? Use
a system of equations to solve the problem.
QUESTION EIGHT
In one day a museum admitted 321 adults and
children and collected $1590. The price of
admission is $6 for an adult and $4 for a child.
How many adults and how many children
were admitted to the museum that day? Use
a system of equations to solve the problem.
153 adults and 168 children were admitted.
QUESTION NINE
Suppose the student council has asked you to
form a committee of juniors and seniors to run
a bake sale. The committee needs from 7 to 10
members. The number of seniors should be at
least twice the number of juniors. Write a
system of inequalities to model the situation
and then graph to solve the system.
QUESTION NINE
Suppose the student council has
asked you to form a committee of
juniors and seniors to run a bake
sale. The committee needs from 7
to 10 members. The number of
seniors should be at least twice the
number of juniors. Write a system
of inequalities to model the
situation and then graph to solve
the system.
s + j •7
s + j Š 10
s •2j