diketahui f(x)=ax+b .jika f(4)=10 dan f (-2)=-14 maka tentukan: a.nilai a dan b b.rumus fungsi c.nilai f (-5) d.bayangan dari 7

f(x) = ax + b
f(4) = 4a + b = 10
4a + b = 10 (i)
f(-2) = -2a + b = -14
-2a + b = -14 (ii)

4a + b = 10
-2a + b = -14
----------------------- -
6a = 24
a = 4

4a + b = 10
4(4) + b = 10
16 + b = 10
b = 10 - 16 = -6

jadi nilai a = 4 & nilai b = -6



c. f(-5) = 4.-5 + -6
f(-5) = -20 + -6 = -26