Question

Tolong isikan yg no 3 sama 5 tolong
cara dan jwaban pliss
besok ngantar

Answer 1

3) f(x) = - ¼x - 6
a) f(-8) = - ¼(-8) - 6
= 2 - 6 = -4
f(5) = -¼ × 5 - 6
= - 5/4 - 6
= -5/4 - 24/4 = -29/4 = - 7¼
b) f(a) = - ¼a - 6 = - 12
-¼a = -12 + 6
- ¼a = -6
a = - 6 : -¼
a = 24

5) f(x) = (x + a) + 3
f(2) = 2 + a + 3 = 7
5 + a = 7
a = 2
a) f(x) = (x + a) + 3
f(x) = (x + 2) + 3
f(x) = x + 5
b) f(-1) = -1 + 5 = 4
c) f(-2) + f(-1)
= (-2 + 5) + (-1 + 5)
= 3 + 4 = 7
d) f(2x - 5) = (2(x + 5) - 5)
= 2x + 10 - 5
= 2x + 5

Answer 2

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