Fungsi f dinyatakan dengan rumus f(×)=ax+b. Diketahui f(3)=11 dan f(1)=7. nilai dari f(-4) adalah​

Jawaban:

–3

Penjelasan dengan langkah-langkah:

3a + b = 11

a + b = 7 (-)

2a = 4

a = 2

•••

2 + b = 7

b = 5

•••

Sehingga,

f(–4) = –4a + b

= –4(2) + 5

= –3 ✔️

Jawaban:

~ Math

f(x) = ax + b

f(3) = 3a + b = 11

f(1) = a + b = 7

_____________ _

2a = 4

a = 2

a + b = 7

2 + b = 7

b = 5

f(x) = ax + b

f(-4) = 2(-4) + 5

f(-4) = -8 + 5

f(-4) = -3