MRY Ch 4.1, 4.2, 4.3 Review (58 pts)
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Last updated about 2 years ago
20 questions
Ch 4.1 A System of Linear Equations has:
- two equations (or more)
- with either 1 solution, infinite solutions, or no solutions (see graphs below)
Solutions can be found by either graphing or using substitution or elimination.
1
How many solutions exist for the graphed system of equations?
How many solutions exist for the graphed system of equations?
1
How many solutions exist for a system of equations if all the equations are graphed exactly on top of each other?
How many solutions exist for a system of equations if all the equations are graphed exactly on top of each other?
2
Which is the system of linear equations in slope intercept form?
Which is the system of linear equations in slope intercept form?
4
The equation of the horizontal line is _______.
The equation for the line rising from left to right is _______
4
The solution to the system of linear equations is (_______,_______)
4
The equation of the vertical line is _______.
The equation for the line falling from left to right is _______
4
A. Graph the system of equations on the "Edit Background" board.
B. Then type the solution in the answer box. Enter answer like: ( , )
A. Graph the system of equations on the "Edit Background" board.
B. Then type the solution in the answer box. Enter answer like: ( , )
4
A. Graph the system of equations on the "Edit Background" board.
B. Then type the solution in the answer box. Enter answer like: ( , )
A. Graph the system of equations on the "Edit Background" board.
B. Then type the solution in the answer box. Enter answer like: ( , )
4
Which of the following are correct system of equations for the description below?
Which of the following are correct system of equations for the description below?
2
The system of equations for this problem is y = 10x+150 and y = 25x, where x represents weeks.
In how many weeks will Roshaun and Keegan have the same amount of money?
The system of equations for this problem is y = 10x+150 and y = 25x, where x represents weeks.
In how many weeks will Roshaun and Keegan have the same amount of money?
3
Use Substitution to solve the system below in the "edit background". Show work below for Full Credit, then select the correct answer.
Use Substitution to solve the system below in the "edit background". Show work below for Full Credit, then select the correct answer.
3
Use Substitution to solve the system. Show your work for Full Credit below in the "edit background" and then enter your answer in the Blank. _______
2
Identify how many solutions exist for the system below. Remember to put in y=mx+b !
Identify how many solutions exist for the system below. Remember to put in y=mx+b !
2
Identify how many solutions exist for the system below. Remember to put in y=mx+b !
Identify how many solutions exist for the system below. Remember to put in y=mx+b !
3
Using Elimination (subtraction), show your work in the "edit background" box below.
At what point do these lines intersect? Enter your answer here.
Using Elimination (subtraction), show your work in the "edit background" box below.
At what point do these lines intersect? Enter your answer here.
3
Using Elimination (addition), show your work in the "edit background" box below.
At what point do these lines intersect? Enter your answer here. Write as a point ( , )
Using Elimination (addition), show your work in the "edit background" box below.
At what point do these lines intersect? Enter your answer here. Write as a point ( , )
3
Using Elimination (subtraction), show your work in the "edit background" box below.
At what point do these lines intersect? Add your answer here.
Using Elimination (subtraction), show your work in the "edit background" box below.
Note: subtracting a negative number turns it to a positive. Remember to stack the like variables on top of each other when solving.
At what point do these lines intersect? Add your answer here.
3
Using Elimination (with a multiplier), solve the system for a point of intersection. Show work in the 'edit background' and
then enter your answer here as a point ( , _ )
Using Elimination (with a multiplier), solve the system for a point of intersection.
Show work in the 'edit background' and
then enter your answer here as a point ( , _ )
4
Two pizzas and four sandwiches cost $62. Four pizzas and ten sandwiches cost $140. Let p represent pizzas and s represent sandwiches.Write 2 equations that represent this situation? (separate equations with a comma and 1 space)
Two pizzas and four sandwiches cost $62. Four pizzas and ten sandwiches cost $140.
Let p represent pizzas and s represent sandwiches.
Write 2 equations that represent this situation? (separate equations with a comma and 1 space)
2
For the same problem, what is the price of each pizza and each sandwich?
[Two pizzas and four sandwiches cost $62. Four pizzas and ten sandwiches cost $140.]
The price of each pizza cost $_______ , and the price of each sandwich cost $_______.