Question

If 3x – y = 2, 5x + ay = 3 and 2x + y = 3 are concurrent lines, then the value of ‘a’ is

Answer 1

Answer:

A= -2

Step-by-step explanation:

3X-Y=2

2X+Y=3

Adding eqn 1 and 2

Get 5x=5 == > x=1

3(1)-y=2

-y=2-3

y=3-2=1

5x+ay=3

5(1)+a(1)=3

a=3-5=-2

therefore a=-2