SOLUTION: PLEASE NEED ANSWERS: and show work 1. 4. Use technology to determine an approximate solution to the system y =- 0.44x + 12.6 and y =- 7.21x � 55.6. Explain the procedure. PLEA

Question 1018933: PLEASE NEED ANSWERS: and show work
1. 4. Use technology to determine an approximate solution to the system y =- 0.44x + 12.6 and y =- 7.21x � 55.6. Explain the procedure. PLEASE PROVIDE GRAPH
2. 1. Solve and verify each of the following systems of linear equations.
a. 5x � 2y =- 6 and 2x � y = 1
Answer:
b. 2x + 3y = 432 and 5x � 2y = 16
Answer:
3. The numbers x and y have a sum of 1 and a difference of 11.
a. Write a system of equations to represent this information.
Answer:
b. Solve the system of equations to determine the numbers.
Answer:

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
1. 4. Use technology to determine an approximate solution to the system y =- 0.44x + 12.6 and y =- 7.21x � 55.6. Explain the procedure. PLEASE PROVIDE GRAPH
---
y =- 0.44x + 12.6
y =- 7.21x � 55.6
Since the both = y,
-0.44x + 12.6 = -7.21x � 55.6
Add 7.21x
6.77x + 12.6 = -55.6
Subtract 12.6
6.77x = 68.2
x = 68.2/6.77
--------------
2. 1. Solve and verify each of the following systems of linear equations.
5x � 2y =-6
2x � y = 1
----
Multiply the 2nd eqn by 2, then subtract.
--------------
b. 2x + 3y = 432 and 5x � 2y = 16
Similar to 2a.
=================================
3. The numbers x and y have a sum of 1 and a difference of 11
a. Write a system of equations to represent this information.
x + y = 1
x - y = 11
----------------Add

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