bantu jawab no 5 okkkkkkkkkkkkkkkkkkk

4x+5y= 3x +10
tegAk lurus
2x+2y = 3ax+2


4x+5y= 3x +10
5y= 3x-4x+10
5y= -x +10
y= -x/5 +10/5

Gradien m1 = -1/5

2x+2y = 3ax+2
2y = 3ax-2x+2
2y = (3a-2)x +2
y= (3a-2)/2 x +2/2

Gradien m2=(3a-2)/2

Karena tegak lurus
m1×m2 = -1
-1/5 × (3a-2)/2 = -1
(-3a+2) / 10 = -1
-3a+2= -10
-3a= -10 -2
-3a= -12
a= -12/-3
a= 4