Graphing: [Calculator]
Substitution
Elimination
Toxic Relationships with math [It's Complicated]
Vocabulary
Redeem Yourself
LinReg
100
y = 2x + 2
y = x − 1
(-3, -4)
100
y = 2
3x + 2y = 10
(2, 2)
100
x + 3y = 5
2x − 3y = −8
(−1, 2)
100
Solve P=a+b+c for b
b=P-a-c
100
Consists of two or more linear equations
System of linear equations (linear system)
100
American Idol
Challenge someone to a sing off. The person who sings [NO RAPPING] the best wins [the other teams will decide the winner]
100
Write the linear regression equation that models the data, rounding all values to the nearest tenth 
y = 9.1x −527.6
200
y = 2x + 4
y = 3x + 2
(2, 8)
200
x = −3y + 2
−x + 2y = 3
(−1, 1)
200
−5y + 8x = −18
5y + 2x = 58
(4, 10)
200
v = Lwh for w
w = (v/(Lh))
200
The method of solving equations where you add or subtract equations to end up with one variable.
Elimination or Addition Method
200
On The Mic
You must tell the class a joke. If someone from another team laughs [or smiles] your team gets the point. The other team members cannot hide their face/mouth. You have 3 mins to come up with a joke. Your team members can help you come up with a joke.
200
State the correlation coefficient. 
r = 0.99
300
x = 3
y = 2x + 1
(3, 7)
300
x − 2y = −10
3x = y
(2, 6)
300
3y − 5x = −26
−2y − 5x = −16
(4, −2)
300
d =rt for r
The solutions are where the shaded regions overlap.
r = d/t
300
How can you tell if a linear system has infinitely many solutions?
The equations are the same, the graphed lines lie on top of one another, or solving the system provides a true statement with no variables.
300
Dancing With The Stars
Challenge anyone to a dance battle [no music]. You must dance for at least 20 seconds. The other teams will decide who won
300
State the correlation coefficient. 
r = 0.92
400
4x + 2y = 8
2x + y = 4
Every point on 2x+y=4 is a solution.
400
2x – 3y = –2
y = −4x + 24
(5, 4)
400
3x − 4y = 8
18x − 5y = 10
(0, -2)
400
1/5B = D + F Solve for B
B = 5(D + F)
400
When will a system of linear inequalities have no solution?
The inequalities are parallel meaning they have the same slope but different y-intercepts and shaded away from each other. Meaning, the shading doesn't overlap
400
AND ONE
Ball up a piece of paper and shoot it in the garbage can. You only get one try. If both teams make it into the BLUE garbage can, both teams get the point. You get one practice round.
400
Predict the score, to the nearest integer, on test y for a student who scored 87 on test x.
y =0.62x +29.18
Answer: 83
500
y = 1/2 x + 2
y = 1/4 x + 4
(8, 6)
500
5x − 13 = y
−5x + y = 24
no solution
500
4x−9y = 2
12x−5y = −38
(-4, -2)
500
(d-8)b = g for b
g / (d-8)
500
How does the graphing method for solving a system of linear equations work?
Graph the two lines. The solution is the point(s) of intersection.
500
HOPS
Choose someone from another team. You must both jump. The person who jumps the highest wins. You MUST choose someone no more than about 2 inches shorter than you. One representative from each of the other teams will judge
500
State the linear regression equation that estimates the heart rate per number of jumping jacks.
y = 1.72x +69.4
600
y=−1/3x + 3
3x − y=7
600
−8x − 7y= -5
−x = y
(5,−5)
600
3x−5y+2z=2
8x+3y−2z=−6
5x+7y−2z=2
x=0, y=2, z=6
600
Hb = f + 4g for b
(f+4g)/H
600
What does the correlation coefficient measure?
The strength and direction of the relationship between two variables
600
Wild Card [Worth no points]
You must swap a member of your team with any member from another team
600
State the linear regression function, f(p), that estimates the number of new homes available at a specific sale price, p. Round all values to the nearest hundredth.
f(p) = −0.79p +249.86
700
y = x^2 + 9x + 6
y= 3x+1
(−5,−14) and (−1,−2)
700
9y+8=x
−2x+8y= −36
(26,2)
700
−2x+3y−4z = 8
5x−3y+5z = −8
7x−3y+3z = 8
x=2, y=−4, z= −6
700
t = A/(4b - D)
for A
A = t(4b-D)
700
What does a correlation coefficient of 0 mean?
There is no linear relationship between the variables.
700
Gift of Gab
Quickly say "Peter Piper picked a pack of pickled peppers. If Peter Piper picked a pack of pickled peppers, where's the pack of pickled peppers Peter Piper picked?" [You get 2 practice rounds]
700
State the correlation coefficient of the data to the nearest hundredth. Explain what this means in the context of the problem. 
f(p) = −0.79p +249.86
Answer: r = −0.95 There is a strong negative correlation as the higher the sales price, the fewer number of new homes available.