Question

Diketahui rumus fungsi L(x)=ax+b dan L(-1)=1 serta L(2)=4 maka a+b adalah?

Answer 1

-a+b=1...(1)
2a+b=4....(2)
———— -
-3a=-3
a=1

substitisi a=1 ke pers (2)
2(1)+b=4
b=4-2
b=2

a+b=1+2
=3

#semogq bermanfaat

Answer 2

A + b = 3

L (x) = ax + b
L(-1) = a (-1) + b
L (2) = a (2) + b

-3a = -3
a = 1

a (2) + b = 4
1 (2) + b = 4
b = 4/2
b = 2