Question

can someonne check my work. i think i know the answers but im just makn sure.
1. how many solutions?
4x+y=-1, and -x+3y=10

2. 5x+3y=10, and -x-0.6y=-1
a.one solution
b.infinite solutions
c.no solutions
3. 12x-3y=10, and -6x+9y=13
a.one solution
b.infinite solutions
c.no solutions
4. 4x+5y=-10, and 3x-8y=15
a.one solution
b.infinite solutions
c.no solutions
i think the answers are. one solution (-1,3), b. infinte solutions, c. no solution.
and a. one solution.

Answer 1

#1 has 1 solution, #2 has no solutions, #3 has 1 solution, and#4 has 1 solution..
i hope these are right