Plis tolong bantu jawab ✨

2. A. m = 1/2
B. m = -3
C. m = 6
3. m = (y2-y1)/(x2-x1)
1/2 = (a-3)/(2--2)
1/2 = (a-3)/(4)
4x1 = 2x(a-3)
4 = 2a - 6
4+6 = 2a
10 = 2a
5 = a