Minta tolong kakak sekalian!

f(x) =ax+b

f(-2) =ax+b
=a(-2)+b
14 = -2a+b
14+2a=b

f(3) =a(3)+b
-1 =3a+b
-1 =3a+(14+2a)
(-1)-14=3a+2a
-15 =5a
a = -15÷5
a= -3


b=14+2a
b=14+2.(-3)
b=14+(-6)
b=8

f(x)=ax+b
f(7)= (-3).7+8
= (-21)+8
= -13/A

#smoga bisa membantu

jawab

f(x)= ax + b
f(-2) = 14
f(3) = -1

(-2-3)a =  14 - (-1)
-5a = 15
a = - 3

f(3) = - 1
b = -1 -3a
b = -1 -3(-3)
b = -1 + 9
b = 8

f(7) = -3(7) + 8
= -21 +8
= - 13