Question

(2,-2)

Answer 1

You should put 2 as x, -2 as y and b as the y intercept

3x+y=4
$3 \times 2 - 2 = b \\ 4 = b$
the first one is true


x-3y=-4
$2 - 3 \times ( - 2 )= b \\ 2 - (- 6) = b \\ 8 = b$
the second one is wrong



good luck