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- 1. Multiple ChoiceThe solution (x, y) to a system of equations is the point where they...?Run off the graphDon't touchIntersectExist
- 2. Multiple Choice
These two lines intersect at _____.(4, -2)(4, 2)(-2, 4)No solution - 3. Multiple Choice
Solve this system of equations by graphing.
y = 4x - 2
y = -x + 3
(-2,-1)
(-1,-2)
(1,2)
(2,1)
- 4. Multiple ChoiceWhat is the solution to this system?(-2, -2)(2, -2)(-2,2)(2, 2)
- 5. Multiple ChoiceThe first step in solving using the substitution method is __________.get x by itselfget y by itselfget either variable by itselfadd the equations together
- 6. Multiple Choice
Which variable should you isolate first in the system?
3x + 2y = 10
x - 5y = 18
The x in the first equation
The y in the first equation
The y in the second equation
The x in the second equation
- 7. Multiple Choice
What is the correct first step in solving this system by substitution?
x = 2y +11
-7x -2y = -13
-7(2y+11) - 2y = -13
-7x -2(2y +11) = -13
2y+11-2y = -13
- 8. Multiple Choice
Solve with substitution
x = -3y - 8
x - 2y = -3
(5, -1)
(-5, 1)
(-5,-1)
(1,-5)
- 9. Multiple Choice
Solve the system by substitution
3x - y = 4
x + 2y = 6
(-2, 2)
(2, -2)
(2, 2)
(-2, -2)
- 10. Multiple Choice
What is the best method do you use?
x = 6y − 11
−2x − 3y = −7
Graphing, because they are both in slope-intercept form
Substitution because a variable is isolated (solved for)
- 11. Multiple Choice
What is the best method to use?
y = −3x + 5
y = x -1
Graphing, because they are both in slope-intercept form
Substitution because a variable is isolated (solved for)
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