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Question
Math
Posted 9 months ago

2. Let f(x)=12x+6f(x)=\frac{1}{2} x+6.
Find: (a) f(0)f(0)
(b) f(14)f(-14)
(c) Find the value of xx for which f(x)=8f(x)=8
(d) Find the value of xx for which f(x)=0f(x)=0
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Answer from Sia
Posted 9 months ago
Solution by Steps
step 1
Given the function f(x)=12x+6f(x) = \frac{1}{2} x + 6, we need to find f(0)f(0)
step 2
Substitute x=0x = 0 into the function: f(0)=120+6f(0) = \frac{1}{2} \cdot 0 + 6
step 3
Simplify the expression: f(0)=6f(0) = 6
Answer
f(0)=6f(0) = 6
Key Concept
Function Evaluation
Explanation
To find f(0)f(0), substitute x=0x = 0 into the function and simplify.
Solution by Steps
step 1
Given the function f(x)=12x+6f(x) = \frac{1}{2} x + 6, we need to find f(14)f(-14)
step 2
Substitute x=14x = -14 into the function: f(14)=12(14)+6f(-14) = \frac{1}{2} \cdot (-14) + 6
step 3
Simplify the expression: f(14)=7+6=1f(-14) = -7 + 6 = -1
Answer
f(14)=1f(-14) = -1
Key Concept
Function Evaluation
Explanation
To find f(14)f(-14), substitute x=14x = -14 into the function and simplify.
Solution by Steps
step 1
Given the function f(x)=12x+6f(x) = \frac{1}{2} x + 6, we need to find the value of xx for which f(x)=8f(x) = 8
step 2
Set the function equal to 8: 12x+6=8\frac{1}{2} x + 6 = 8
step 3
Subtract 6 from both sides: 12x=2\frac{1}{2} x = 2
step 4
Multiply both sides by 2: x=4x = 4
Answer
x=4x = 4
Key Concept
Solving Linear Equations
Explanation
To find xx for which f(x)=8f(x) = 8, set the function equal to 8 and solve for xx.
Solution by Steps
step 1
Given the function f(x)=12x+6f(x) = \frac{1}{2} x + 6, we need to find the value of xx for which f(x)=0f(x) = 0
step 2
Set the function equal to 0: 12x+6=0\frac{1}{2} x + 6 = 0
step 3
Subtract 6 from both sides: 12x=6\frac{1}{2} x = -6
step 4
Multiply both sides by 2: x=12x = -12
Answer
x=12x = -12
Key Concept
Solving Linear Equations
Explanation
To find xx for which f(x)=0,setthefunctionequalto0andsolveforf(x) = 0, set the function equal to 0 and solve for x$.

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