Question

you move left 1 unit. you end at ( - 1, 5). where did you start?

Explanation:

Step1: Understand coordinate movement

Moving left on a coordinate - plane changes the x - coordinate. Moving left means subtracting from the x - coordinate.

Step2: Set up the calculation

The final point is (3, 5) and we moved left 1 unit. Let the initial x - coordinate be $x$. The equation for the x - coordinate movement is $x-1 = 3$.

Step3: Solve for the initial x - coordinate

Add 1 to both sides of the equation $x-1 = 3$. So, $x=3 + 1=4$. The y - coordinate remains the same during a horizontal movement. So the starting point is (4, 5).

Answer:

(4, 5)