Question

20 POINTS!!! Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9?

x + 2y = 21

A: 4x + 6y = 64
B: 2x + y = 36
C: 4x + y = 21
D: -3x + 4y = 33
E: 3x + 2y = 28

Answer 1

Answer:

C) 4x+y=21

here value of x=3 and y=9

so lets put the values

4×3+9

12+9=21

hope it helped u dear ✌️ ✌️✌️

Answer 2

Answer:

C) 4x+y=21

Step-by-step explanation: