Question

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

Answer 1

Answer:

D.

Step-by-step & Reason explanation: This is really a general answer, it is actually really easy to answer. What you'd do is take whatever shape (like triangle ABC) and flip it over. When the question asks over the y-axis, you'll just flip it over to that side. I'm not sure if that made any since. But, think of it as a butterfly. You'll just throw it to the side the axis represents.

Thanks!

Answer 2

Answer:

The correct option is 3.

Step-by-step explanation:

If the triangle ABC reflected over the y-axis, then

$(x,y)\rightarrow (-x,y)$

From the given figure it is noticed that the vertices of triangle ABC are A(1,1), B(3,4) and C(3,1).

The vertices of image are

$A(1,1)\rightarrow A'(-1,1)$

$B(3,4)\rightarrow B'(-3,4)$

$C(3,1)\rightarrow C'(-3,1)$

The vertices of the image are A'(-1,1), B'(-3,4) and C'(-3,1). Therefore option 3 is correct.