Question

how far should point j be from the x-axis? 4 units reflect point j across the x-axis.

Explanation:

Step1: Identify coordinates of J

Point J is at ( -1, 4 ) (assuming grid units, x=-1, y=4).

Step2: Reflect over x - axis

Reflection over x - axis: (x, y) → (x, -y). So J' will be at ( -1, -4 ).

Step3: Distance from x - axis

Distance from x - axis is the absolute value of y - coordinate. For J', | - 4| = 4.

Answer:

4 units