Question

using the pencil, plot the reflection of point a across the y-axis.

Explanation:

Step1: Identify coordinates of A

Point A is at $(7, 0)$

Step2: Apply y-axis reflection rule

For reflection over y-axis, $(x,y)\to(-x,y)$. So $(7,0)\to(-7,0)$

Step3: Plot the reflected point

Mark the point at $(-7, 0)$ on the grid.

Answer:

The reflection of point A across the y-axis is the point at coordinates $(-7, 0)$, plotted on the grid at the position 7 units left of the y-axis on the x-axis.