Question

Tolong bantu menjawab soal ini yaa

Answer 1

F(x) = ax+b
f(2) = 2a+b = 1
f(4) = 4a+b = 7
         -2a    = -6
               a = -6  
                     -2
               a = 3

4a+b = 7
4 . 3 + b =7
12 + b = 7
       b = 7 -12 = -5

a+2b 
3 + 2 . -5 = -7

Answer 2

2a + b = 1
4a + b = 7

2a=6
a=3

2a + b = 1
2(3) + b =1
6 + b = 1
b = 1-6
b=-5

a + 2b = 3+ 2(-5)
= 3 + (-10)
= -7

jawabannya a