Unit 3 Whiteboard Game Review
Rules of the Game…
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The class will be split in to 3 Teams
Every member of the team will complete the problem on
the whiteboard
At random, one member of each team will be selected to
hold up the whiteboard to see if he/she has the correct
answer
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If the correct answer is given, that person can shoot from the
EASY line
If an incorrect answer is given, that person has to shoot from
the HARD line
Whichever team has the most points in the end wins!
Question #1

Use the graph to determine how many solutions the
system has. If the system has one solution, name it.
𝑦 = 2𝑥 − 1
𝑦 = −2𝑥 + 3
Answer:
One solution  (𝟏, 𝟏)
Question #2

Solve the system of equations
𝑦 = 2𝑥 − 3
𝑦 =𝑥+4
Answer:
(𝟕, 𝟏𝟏)
Question #3

Solve the system of equations
3
𝑦 =− 𝑥+6
2
3𝑥 + 2𝑦 = 6
Answer:
No Solution
Question #4
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Solve the system of equations
3𝑥 + 3𝑦 = 24
𝑥+𝑦 =8
Answer:
Infinitely Many Solutions
Question #5
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Solve the system of equations
3𝑥 + 4𝑦 = 10
9𝑥 − 24𝑦 = −6
Answer:
(𝟐, 𝟏)
Question #6

Angelina spent $16 for 12 pieces of candy to take to a
meeting. Each chocolate bar costs $2, and each lollipop
costs $1. Determine how many of each she bought.
Answer:
4 chocolate bars and 8 lollipops
Question #7
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Kishi makes $7 an hour working at the grocery store and
$10 an hour delivering newspapers. She cannot work
more than 20 hours per week but wants to make at least
$90 every week. Write a system of inequalities to model
this situation.
Answer:
𝒈 + 𝒏 ≤ 𝟐𝟎
𝟕𝒈 + 𝟏𝟎𝒏 ≥ 𝟗𝟎
Question #8
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Write a system of inequalities that represents the graph.
Answer:
𝒚 ≥ 𝟑𝒙 − 𝟓
𝒚 < 𝟑𝒙 + 𝟒
Question #9
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Write a system of inequalities that represents the graph.
Answer:
𝒚 ≤ −𝒙 + 𝟓
𝒚≥𝒙+𝟐
Question #10

Is (2,2) a solution the following system of equations?
𝑥 + 𝑦 ≤ 20
15𝑥 + 10𝑦 ≥ 90
Answer:
No…the solution doesn’t work in the second
inequality.