Questions: For the equation shown below, solve for y as a function of x and express the result using function notation 32 * x + 4 * y = 16
f(x)=
Given f(x)=2 x-2
a) Evaluate f(4)
Transcript text: For the equation shown below, solve for $y$ as a function of $x$ and express the result using function notation $32 \cdot x+4 \cdot y=16$
$f(x)=$ $\square$
Given $f(x)=2 x-2$
a) Evaluate $f(4)$
Solution
Solution Steps
Question 10
For the equation \(32 \cdot x + 4 \cdot y = 16\), solve for \(y\) as a function of \(x\) and express the result using function notation \(f(x)\).
Solution Approach
Isolate \(y\) on one side of the equation.
Express \(y\) in terms of \(x\).
Write the resulting expression in function notation \(f(x)\).
Step 1: Solve for \( y \) in terms of \( x \)
Given the equation:
\[ 32 \cdot x + 4 \cdot y = 16 \]
First, isolate \( y \) on one side of the equation. Subtract \( 32x \) from both sides:
\[ 4y = 16 - 32x \]
Next, divide both sides by 4 to solve for \( y \):
\[ y = \frac{16 - 32x}{4} \]
Simplify the fraction:
\[ y = 4 - 8x \]
Step 2: Express \( y \) as a function of \( x \)
Using function notation, we write:
\[ f(x) = 4 - 8x \]
Final Answer
\[
\boxed{f(x) = 4 - 8x}
\]
Step 1: Evaluate \( f(4) \)
Given the function:
\[ f(x) = 2x - 2 \]
Substitute \( x = 4 \) into the function:
\[ f(4) = 2(4) - 2 \]