suatu fungsi linear didefisinikan dengan f(x)=ax+b,dengan x € R jika f(-2)=8 dan f(-5)=14 maka nilai a dan b berturut adalag

f(-2) = 8

a(-2) + b = 8.... (1)


f(-5) = 14

a(-5) + b = 14..... (2)

_____________

b - 2a = 8
b - 5a = 14
...................-
3a = -6
a = -6/3
a = -2 ✔


b - 2a = 8

b - 2(-2) = 8

b = 8 - 4
b = 4✔