Which figure shows a reflection of pre-image abc over the y-axis?

Figure A

Step-by-step explanation:

We know that in reflection every point on the figure and its corresponding image point are equidistant from the line of reflection.

When we reflect a figure across the y-axis, then the y-coordinates of the points of the pre-image remains the same, but the x-coordinate is transformed into its opposite.

The given line of reflection is y-axis.

The only figure which follow the rule of reflection across y axis is figure A because in figure A the vertices of triangle ABC and the corresponding vertices of equidistant from y-axis.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

include a picture of the drawing in order for me to

step-by-step explanation: