Final answer:
To solve for x in the equation y = x + 3, subtract 3 from both sides to get y - 3 = x. The rearranged equation helps us find the y-intercept of the line.
Step-by-step explanation:
To solve for x in the equation y = x + 3, we need to isolate x on one side of the equation. By subtracting 3 from both sides, we get y - 3 = x. This rearranged equation tells us that the value of x is equal to y - 3.
The feature of the line that can easily be found using the rearranged equation is the y-intercept. The y-intercept is the point where the line crosses the y-axis, which is the value of x when y is equal to zero. In this case, the y-intercept is at (0, -3).
Learn more about Rearranging equations