Tentukan titik potong 2 garis linier : A. y= 1/2x+12 dan y= x+6 B. y= -4x+4 dan y= 1/4x+10

y = ½x + 12
y= x + 6
—-—-—----- -
0= - ½ x + 6
½ x = 6
x = 12

y= 12+ 6= 18
tipot (12,18)

b
y= - 4x+4
y= ¼ x+10
------------- -
0= - 4¼ x-6
4¼ x = - 6
x= - 6. 4/17
x= - 24/17

y= - 4 (-24/17)+4
= 96/17+68/17=164/17
jadi tipotnya (-14/17,164/17)