TOLONG DIJAWB YAA . A(6,-4) B(7,a) mAB = 1per2 cari a

diket : m = 1/2
y² = a , y¹= -4
x²= 7 ,x¹= 6
dit : a?
m = y²-y¹
-----
x²-x¹
1/2 = a-(-4)
-------
7-6
1/2 = a+4
------ -----> keduaruas kali 2
1
1= 2a+8
2a=7
a = 7/2