Suatu fungsi ditentukan drngan rumus F (x) = ax + b. Diketahui f (-2) = -1 dan f(-1) =2 . Nilai a dan b berturut turut adalah... A. a = -3 dan b= 5 b. a=-5 dan b=3 C. a= 3 dan b = 5 D. A= 5 dan b = 3
Tolong dijawab :( buat penyelesainnya
dyanitaputri896f(x) = ax + b f(-2) = a(-2) +b = -1 f(-1) = a(-1) + b = 2 - a = -3
f(x) = ax + b f(-2) = -3(-2) + b = -1 = 6 + b = -1 = b = -1+6 b = 5
f(-2) = a(-2) +b = -1
f(-1) = a(-1) + b = 2 -
a = -3
f(x) = ax + b
f(-2) = -3(-2) + b = -1
= 6 + b = -1
= b = -1+6
b = 5
jawaban = A