Fungsi h dinyatakan dengan dengan rumus h(x)=ax+b. jika h(3)=-4 danh(4)=-7, nilai h(-1)adalah

h(x) = ax + b

h(3) = 3a + b = -4
h(4) = 4a + b = -7
_____________ -
= -a = 3
= a = -3

3a + b = -4
-9 + b = -4
b = 5

h(-1) = ax + b
= -3(-1) + 5
= 3 + 5 = 8

h(-1) = 8

h(x)=ax+b
h(3)=a(3)+b=-4
=3a+b=-4
h(4)=a(4)+b=-7
=4a+b=-7
3a+b=-4
4a+b=-7
_______-
-1a+0=3
a=3+1
a=4

3a+b=-4
3(4)+b=-4
12+b=-4
b=-4-12
=-16

Fungsi =h(x)=4x+(-16 )
h(-1)=4(-1)+(-16)
h(-1)=-4+(-16)
=-4-16
=-20