Graphing
Substitution
Elimination
Inequalities
Random Questions
100
Tell whether (5, 2) is a solution of the system 2/5x - y = 10 3x - y = 13
What is yes?
100
The first step in solving a system by substitution is to......?
What is solve for one variable in at least one equation.
100
The goal of elimination is to......??
What is eliminate (or get rid) of one of the variable so that you can solve for the other.
100
graph the solutions of the linear inequality on the board. y < 3x + 4.
What is dashed and shaded above the boundary line?
100
The solution of a system of equations is written as a(n) ___________ ___________
What is an ordered pair?
200
Tell whether (-2, 2) is a solution of the system. x + 3y = 4 -x + y = 2
What is no.
200
After you solve for one variable then you do what?
What is substitute that expression into the OTHER equation.
200
Solve by elimination. -x + y = 5 x -5y = -9
What is (-4, 1).
200
tell whether the ordered pair, (2, 0) is a solution of the inequality. y > -2x -2
What is yes.
200
Tell whether the ordered pair (0, 0) is a solution of the system: y > - x -1 y < 2x + 4
What is yes.
300
Solve the system by graphing. y = x 2x + y = - 3
What is (-1, -1).
300
Solve by subst. y = x + 3 y = 2x + 4
What is (-1, 2).
300
Solve by elimination. 2x + 5y = -24 3x - 5y = 14
What is (-2, -4).
300
Tell whether the ordered pair is a solution of the inequality. (0, 7); y > 4x + 7
What is no.
300
write a system of inequalities to represent each graph. pg 425, # 35.
What is y > x + 1 y < x + 3.
400
Solve the system by graphing. y = 1/2x y = -x + 3
What is (2, 1).
400
Solve by subst. 3x + y = -8 -2x - y = 6.
What is (-2, -2).
400
Solve by elimination. 5x + y = 0 5x + 2y = 30
What is (-6, 30).
400
Look at the graph on page 418, # 20. Write the inequality to represent the graph.
What is y > 2/3x -1.
400
solve the "special system" x + y = 2 2x + 2y = -6
What is NO SOLUTION.
500
Solve the system by graphing. -2x - 1- y x = - y + 3
What is (-4, 7).
500
Solve by subst. y = 1.2x - 4 2.2x + 5 = y
What is (-9, 14.8).
500
Solve by elimination. 2x + 4y = -4 3x + 5y = -3
What is ((4, -3).
500
Graph the system of inequalities and give one ordered pair that is a solution and one ordered pair that is not a solution. y < -1 y > 2x -1
What is check your answers on the board.
500
SOLVE THE "SPECIAL SYSTEM" 3x = -6y + 3 2y = -x + 1
What is infinitely many solutions.
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