Answer:
Step-by-step explanation:
y = 3x - 4 (1)
4x + 3y = 1 (2)
if we substitute y by 3x - 4 in the second equation we get
4x + 3(3x-4) = 1 ⇒ 4x + 9x - 12 = 1 ⇒ 13x = 13 ⇒ x = 1
now ,we substitute x by 1 in the first equation
y = 3(1) - 4 = 3 - 4 = -1