Question

Fungsi g ditentukan dengan rumus g(x) = ax + b di ketahui g(5) = -11 dan g(-3) = 13 tentukan nilai a dan b, rumus fungsi f, serta nilai x = 4 tolong di jawab besok di kumpul plis

Answer 1

Verified answer

G(x) = ax + b
g(5)=> 5a + b =-11
g(-3)=> -3a + b = 13
kurangkan
8a = -24
a= -3

5(-3)+b=11
b=11+15
b=26

jadi a = -3 dan b=26
serta fungsi g(x) = -3x+26
dan x=4
g(4)= -3(4)+26
=-12+26
= 14
solved

Answer 2

G(x) = ax + b
g(5) = a(5) + b
-11 = 5a + b
b = -11 - 5a

g (-3) = a(-3) + b
13 = -3a + (-11) - 5a
13 + 11 = -8a
24 = -8a
a = 24/-8
a = -3

b= -11 -5a
b = -11 -5(-3)
b = -11 + 15
b = 4

g(x) = ax + b
g(x) = -3x +4

f(x) = -3x + 4
f(4) = -3(4) +4 = -12 +4 = -8