Question

1. If x=2, y =3 is a solution of a pair of
lines 2x - 3y + a=0, 2x + 3y-b+2=0, then:​

Answer 1

Answer:

X=2

y=3

2x-3y+a=0

(2×2)-(3×3)+a=0

4-9+a=0

-5+a=0

a=5

2x+3y-b+2=0

(2×2)+(3×3)-b+2=0

4+9-b+2=0

15=0

Option D ✅

3a=b

3×5=15

15=15

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