Question

what is $x^2 + 6x = x^2 - 6x$ as a system?
$\bigcirc$ $y = x^2 + 6x$
$y = x^2 - 6x$
$\bigcirc$ $y = -x^2 + 6x$
$y = x^2 - 6x$
$\bigcirc$ $y = -x^2 - 6x$
$y = x^2 - 6x$

Explanation:

Step1: Set each side equal to $y$

To rewrite the equation $x^2 + 6x = x^2 - 6x$ as a system, assign each expression to $y$.

Step2: Form the system

Left side: $y = x^2 + 6x$
Right side: $y = x^2 - 6x$
This matches the first option.

Answer:

A. $y = x^2 + 6x$
$y = x^2 - 6x$