fungsi h(×)=3×+7 mempunyai h(a)=4 dan h(5)= b.nilai a-b adalah

h(x) = 3x + 7
h(a) = 3a + 7 = 4
3a = 4 - 7
a = (-3) ÷ 3
a = (-1)

h(5) = 3(5) + 7 = 19 = b

a - b = (-1) - 19 = (-20)

Dik: h(x) = 3x+7
h(a) = 4
h(5) = b
Dit: a-b ......?
jawaba!
h(x) = 3x+4
h(a) = 3x+7 = 4
3x = 7 = 4
3x = 7-4
3x = 3
x = 3/3
x = 1 ...........................(a)

h(5) = 3(5)+7 = b
= 15+7 = b
= 22 = b ............................(b)

a-b= 1-22 = -21

semoga membantu