Question

(3,-4)is not solution of 1)x+2y+5=0 2)2x-3y=18 3)2x+3y+6=0 4)7x+5y+1=0

Answer 1

Answer:

hope this helps u

4)7x+5y+1=0 is the answer

Step-by-step explanation:

(3,-4)

(x,y)

x = 3

y = -4

1)x+2y+5=0

3+ 2*-4+5=0

8-8=0

0=0 it is a solution of x+2y+5=0

2)2x-3y=18

2*3-3*-4=18

6+12=18

18=18 it is a solution of 2x-3y=18

3)2x+3y+6=0

2*3+3*-4+6 =0

12-12=0

0=0 it is a solution of  2x+3y+6=0

4)7x+5y+1=0

7*3+5*-4+1=0

21-20+1=0

22-20=0

2≠0 so it is not a solution 7x+5y+1=0