+1090 I want to verify that I solved them correctly.
1-3: Tell whether the ordered pair is a solution of the linear system.
1. (-3, 1)
x + y = -2
x + 5y = 2
My answer: Solution
2. (5, 2)
2x - 3y = 4
2x + 8y = 11
My answer: Not a solution
3. (-2, 1)
6x + 5y = -7
x - 2y = 0
My answer: Not a solution
4. Which ordered pair is a solution of the linear system x + y = -2 and 7x - 4y = 8?
My answer: (0 -2)
5. Which ordered pair is a solution of the linear system 2x + 3y = 12 and 10x + 3y = -12?
My answer: (-3, 6)
6-8: Solve the linear system.
6. x - y = 4
4x + y = 1
My answer: (1, -3)
7. -x + y = -2
2x - y = 6
My answer: (4, 2)
8. x + y = 5
-2x + y = -4
My answer: (3, 2)
9. Describe and correct the error in solving the linear equation below:
x - 3y = 6
2x - 3y = 3
The solution is (3, -1).
My answer: The student made a mistake when making the graph; the correct answer is (-3, -3).
+1090 #6 was a mistype: x - y = 4; 4x + y = 1 was what I meant.
As for #9, I mixed up the y-intercepts, so the correct answer is actually (-3, -3)
Right?
Btw, I like your new avatar, Geno.
