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Alg1 Q3 Test 1 Review Sheet
All Periods: Test is on Thursday, 2/9/06
Due: Wednesday, 2/8/06
Mr. McCormack
Section 1:
Graphing Inequalities:
Graph each inequality or system of inequalities:
1) 28x – 14y > 56
2) y – 7 > - ⅓(x + 15)
Y < 2X -4
y > - ⅓x + 2
3) y > 6
4) x < -4
16x + 4y < 20 y < -4x + 5
y – 3 > ½ (x + 2) y > ½ x + 4
5) 27x -18y < -18 y > (3/2)x+1
y + 3 > -2(x – 2) y>-2x +1
6) y – 4 < (4/3)(x – 3) y < (4/3)x
33x + 44y < 126 y < - ¾ x + 3
Section 2:
Solve Systems w/ Substitution
Solve each system with substitution and check:
1) x = 3y – 5
2) y = 22 -4x
3x – 11y = 13
9x -5y = -23
(-8, 1)
(3,10)
4) x – 6y = 30
5) 7y – x = 9
5x – 4y = 98
4x -9y = 21
(18,-2)
(12,3)
3) 5x + y = -49
8x + 13y = -10
(-11,6)
6) 8y – x = -37
7x + 4y = 49
(-9,3.5)
Section 3:
Solve Systems w/ Elimination
Solve each system with elimination and check:
1) 7x + 5y = 26
2) -6x – 7y = -21
13x + 5y = 74
12x – 10y = -102
(8,-6)
(-3.5, 6)
4) 9x – 4y = -19
5) 6x = 10y + 38
8x + 7y = -133
7x – 3y = 27
(-7,-11)
(3,-2)
7) 14x – 42y = 210
8) 22x + 11y = 33
-8x + 24y = 120
16x + 8y = 24
No Solution
Many Solutions
3) 5x + 7y = -35
4x + 9y = -28
(-7,0)
6) 11y = 15 – 3x
4x + 10y = 34
(16,-3)
9) 6x = 5y - 2
7y = 2x + 22
(3,4)