Question

Please help

3. How many solutions does the system of equations have?
3x = -12y + 15 and x + 4y = 5
A. One
B. Two
C. Infinitely many
D. none

4. How many solutions does the system of equations have?
y= 5x + 7 and y = 5x + 8
A. one
B. two
C. none
D. Infinitely many

5. How many solutions does the system of equations have?
x-3y = 15 and y = 1/3x - 5
A. one
B. Two
C. None
D. Infinitely many

6. y - 5x = -6
y - 5x = -4
A. One
B. Two
C. Infinitely many
D.none

Answer 1

3) C
4) C
5) D
6) D

I am sure of my answers.