tolong dibntu ya pakai caraaa

a/3 y = (2a +1 ) x--> gradien 4
y = (2a+1)/(a/3) x
y = (6a+3)/a x
** (6a +3) /a = 4 --> 6a+3 = 4a --> 2a + 3 = 0 -->a = -3/2 maka 6a = -3/2 x 6 = -9

x=2 persamaan 3x + 5y -16 = 0
3(2) + 5y -16 = 0
6 +5y-16=0
5y -10 = 0
5y = 10
y =2