Question

Triangle JKL was 90 clockwise about the origin. Triangle J’K’L is graphed below . What were the coordinates of the pre-image point L ? A. (-4,-2) B. (-2,-4) C. (2,4) D. (4,2)

Answer 1

C. (2, 4)

Step-by-step explanation:

If we rotate a figure 90 clockwise about the origin, the rule for the new coordinates of the figure will be:

(x, y) --> (y, -x)

Now, the coordinates of the image of point L are L'(4, -2)

It means that:

(y, -x) = L'(4, -2)

So, y = 4 and -x = -2

Then, the coordinates of the pre-image of point L were L(2, 4)