Answer :
Answer:
- (a) 36, (b) 8, (c) - 8
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Given function
- f(x) = 8 - 4x
Find the indicated values
(a) f(-7)
- f(-7) = 8 - 4(-7) = 8 + 28 = 36
(b) f(0)
- f(0) = 8 - 4(0) = 8 - 0 = 8
(c) f(4)
- f(4) = 8 - 4(4) = 8 - 16 = - 8
Answer:
- a) f(-7) = 36
- b) f(0) = 8
- c) f(4) = -8
Step-by-step explanation:
a) f(-7) = ?
→ f(x) = 8 - 4x
→ f(-7) = 8 - 4(-7)
→ f(-7) = 8 + 28
→ f(-7) = 36
Hence, f(-7) = 36.
b) f(0) = ?
→ f(x) = 8 - 4x
→ f(0) = 8 - 4(0)
→ f(0) = 8 - 0
→ f(0) = 8
Hence, f(0) = 8.
c) f(4) = ?
→ f(x) = 8 - 4x
→ f(4) = 8 - 4(4)
→ f(4) = 8 - 16
→ f(4) = -8
Hence, f(4) = -8.