Systems of Equations
Systems, but harder
Mean/median;
Systems Word
Problems
Systems Word
Problems
Box and Whisker Plots
Function/ Not a Function
100
23. List the three methods used to solve systems of equations
Graphing
Substitution
Elimination
100
27. x + 4y = 6
6x = -60
(-10, 4)
100
36b. What is the FIRST step in finding the median?
Order from lowest to highest
100
37a.
Identify the minimum value
70
100
1. (Pear)
Is this a function?
Yes (passes vertical line test)
200
22b. Tell whether the ordered pair is a solution of the system of equations:
x - 3y = -7 (-1, 2)
-2x + 4y = 10
Yes
200
28. x = y + 8
2x + 3y = 11
(7, -1)
200
36a. How do you find a mean?
1) Add all numbers up
2) Divide by # of entries
200
37b.
Identify the maximum value
95
200
1. (Pear)
Is this a function?
Yes (every x has only 1 y)
300
22a. Is (-2, 0) a solution the system of equations?
4x + 2y = -8
3x - y = -11
No (the point is not on line 2)
300
29. 4x - 3y = 2
x + 3y = 8
(2, 2)
300
"Don't stress, do your _____."
best :)
300
37c, 37d.
Identify the median AND the range.
Median: 85
Range: 25
300
1. (Pear)
Is this a function?
Yes (every x has only 1 y)
400
25. Solve the system of equations.
Hint: Use substitution
y = -3x - 2
y = x + 2
(-1, 1)
400
30a. To use elimination, what would be the best value to multiply the second equation by? _______
3x + 2y = -5
6x + y = -7
-2
400
33a. The sum of two numbers is 87 and the difference of the same two numbers is 23.
Write the equations that represent the system.
(x represents the first number and y represents the second number)
x + y = 87
x - y = 23
400
37e.
Identify the interquartile range
About 12
400
1. (Pear)
Is this a function?
No (fails vertical line test)
500
26. Solve the system
Hint: Use substitution
-8x + 2y = 8
y = -4
(-2, -4)
500
30b. Solve the system
3x + 2y = -5
6x + y = -7
(-1, -1)
500
33b.
x + y = 87
x - y = 23
Find the two numbers (solve for x and y).
55 and 32
500
37f. Describe the distribution of the data
_____________________ because the ______ whisker is longer than the ______ whisker.
Skewed left: left whisker is longer than right whisker
500
1. (Pear)
(5, −6), (2, 0), (−3, 7), (5, 4), (−2, −1)
Is this a function?
No. 5 has 2 different y values.