diketahui f(x) = mx + n, f(-3) = -3, dan f(5) = 13. Nilai f(4) = ...

silahkan cek gambarnya ya kak^^
semogamembantu

f(x)= mx+n
f(-3)= -3m +n = -3
f(5)= 5m + n = 13 -
- 8m + n = -16
-8m = -16
m= -16/-8 = 2

-3m + n = -3
-3( 2) +n = -3
-6 +n = -3
n = -3+6 = 3

nilai f( 4) = 4m + n
= 4(2) + 3
= 8 + 3 = 11