bantu dong pake cara!

14. B

15. f(x) = ax+b
f(5) = 5a+b = 13
f(-3) = -3a+b = -11
>> 8a = 24
>> a = 24/8 = 3
(5*3)+b = 13
b = 13-15 = -2
jadi f(x) = 3x+(-2) = 3x-2

16. (-2,0) (0,5)
m = y2-y1/x2-x1
m = 5-0/0+2 = 5/2

17 dan 18 lupa caranya