Question

CHECK MY ANSWERS???

Question 1.1. Solve, using linear combination.

3x + y = 4
2x + y = 5

(Points : 4)
(–1, 7) MY ANSWER
(0, 4)
(–3, 12)
(–3, 13)


Question 2.2. How many solutions are there to the following system of equations?

2x + 5y = –11
10x + 25y = –55


0
1
2
infinitely many (MY ANSWER)


Question 3.3. How many solutions are there to the following system of equations?

3x + 7y = –10
15x + 35y = –45

0 (MY ANSWER)
1
2
infinitely many