Graphing
Substitution
Elimination
Matrices
Review
100
x = 4 and y = 3
What is (4, 3)
100
3x + 2y = 2 and y = 4
What is (-2, 4)
100
x + y = 12 and x - y = 2
What is (7, 5)
100
x + 3y = 5 and x + 4y = 6
What is (2, 1)
100
Find the slope of the line y = 1/2x + 5/2
What is 1/2
200
y = x - 2 and y = -x + 3
What is (2, 1)
200
4x + 2y = 7 and y = 5x
What is (0.5, 2.5)
200
x + 2y = 10 and x + y = 6
What is (2, 4)
200
2x - 3y = 6 and x + y = -12
What is (-6, -6)
200
What is the y-intercept of the line y = 1/2x + 5/2
What is 5/2
300
y = x - 2 and y = -2x + 7
What is (3, 1)
300
x + 12y = 68 and x = 8y - 12
What is (20, 4)
300
4x + 2y = 4 and 6x + 2y = 8
What is (2, -2)
300
A clothing store is having a sale. A pair of jeans cost $15 and a shirt cost $8. You spend $131 and buy a total of 12 items. Using a matrix, how many pairs of jeans and shirts do you buy?
What is 5 pair of jeans and 7 shirts
300
What is the slope of 4x + 8y = 12
What is -1/2
400
2x + 4y = 12 and x + y = 2
What is (-2, 4)
400
4x + 2y = 8 and y = 2x +1
What is (.75, 2.5)
400
3x + 4y = -13 and 5x + 6y = -19
What is (1, -4)
400
2x + 3y + z = 13 and 5x - 2y - 4z = 7 and 4x + 5y + 3z = 25
What is (3, 2, 1)
400
What is the y-intercept of 4x + 8y = 12
What is 3/2
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