Question

What will the coordinates of the points of the given triangle be after its reflection along y-axis?

• A. (0,10), (5,4), (6,15)
• B. (6,10), (4,5), (0,15)
• C. (5,10), (4,5),(6,15)
• D. (0,10), (4,5),(6,15)

Answer 1

The correct option is D (0,10), (4,5),(6,15)


The coordinates of the given triangle are:
A = (0,10)
B = (-4,5)
C = (-6,15)

The triangle is getting reflected along y-axis.

Change in x and y coordinates on reflection will be:

X-coordinates: x = - x

Y-coordinates: y = y

We get:

Original coordinates	New coordinates
A = (0,10)	A' = (0,10)
B = (-4,5)	B' = (4,5)
C = (-6,15)	C' = (6,15)

Plotting the points on the graph we get: