Graph the function f (x) = 2x^2 - 2x. What is the y-value that corresponds to the x-value of -1?

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
9 hours ago

To find the y-value that corresponds to the x-value of -1 for the function \( f(x) = 2x^2 - 2x \), we can substitute \( x = -1 \) into the function.

\[ f(-1) = 2(-1)^2 - 2(-1) \]

Calculating step by step:

  1. Calculate \( (-1)^2 \): \[ (-1)^2 = 1 \]

  2. Substitute into the function: \[ f(-1) = 2 \cdot 1 - 2 \cdot (-1) \]

  3. Calculate \( 2 \cdot 1 \): \[ 2 \cdot 1 = 2 \]

  4. Calculate \( 2 \cdot (-1) \): \[ 2 \cdot (-1) = -2 \]

  5. Now substitute these values back into the equation: \[ f(-1) = 2 - (-2) \]

    This simplifies to: \[ f(-1) = 2 + 2 = 4 \]

Therefore, the y-value that corresponds to the x-value of -1 is \( f(-1) = 4 \).