Question

Nomor 42 ditolong yaa

Answer 1

y-y1    =   x-x1
y2-y1       x2-x1

y-4    =   x-(-3)
-5-4        2-(-3)
y-4   =  x+3
-9        5
5y-20 = -9x-27
5y+9x = -27+20
5y+9x = -7

Answer 2

A : ayam
k: kambing

a+k = 24 ----> a = 24-k
2a+4k = 64
2(24-k)+4k = 64
48-2k+4k = 64
2k = 64-48
2k = 16
k = 16/2 = 8 ekor

a = 24-k = 24-8 = 16 ekor