Question

Solve, using linear combination.

3x – y = 4
2x + y = 6

Answer 1

3x-y=4...............eq#1
2x+y=6...............eq#2
take eq#1
y=3x-4...........eq#A
put Eq#A into Eq#2
2x+3x-4=6
5x=6+4
5x=10
x=2
now put x=2 into eq#A
y=3(2)-4
y=6-4
y=2

so the solution set is { (2,2) }
this is the answer

Answer 2

thankyou!! can you help me with another one!

Answer 3

Use the graph to state the solution for the system.

x – y = 3 (line a)
x + y = 3 (line b)