Question

Ax+By=7 and Ax-By=9 intersect at (4, -1). Find A and B

Answer 1

Answer:

A= 2  B=1

Step-by-step explanation:

Ax+By=7

Ax-By=9

given they pass through (4,-1)

4A-B=7

4A+B=9

8A=16

A=2

4(2)-B=7

B=1

Hope it Helps