tolong ya no 2,3,4 semoga mendapat pahala

Jawab :

2) 2y = 4x - 3
    -4x + 2y = -3

m = -(a/b)
    = -(-4/2)
    = 2 (A)

3) melalui titik (2,5) dan (4,6)

m = y2 - y1/ x2 - x1 
    = 6 - 5/ 4 - 2
    = 1/2 (B)

4) m = y2 - y1/ x2 - x1
    -1 = 2y - 1/-3 - 1
    -1 = y/-4

y = -1 × (-4)
y = 4 (D)