Diketahui fungsi f(x) = mx + n,f(-1) = 1, dan f(1) = 5. Nilai m dan n berturut turut adalah.....

f(x) = mx + n
f(-1) = m(-1) + n = 1
-m + n = 1 >>> n = 1+m
f(1) = m(1) + n = 5
m + n = 5

subtitusikan n = 1+m
m + n = 5
m + (1+m) = 5
m + m + 1 = 5
2m + 1 = 5
2m = 5-1
2m = 4
m = 4/2
m = 2

n = 2+m
n = 2+3
n = 5

Jadi, m = 2 dan n = 5