Areflection of the pink triangle is shown. which transformation makes this reflection?
a) (x', y') = (y, x)
b) (x', y') = (x, -y)
c) (x', y') = (-x, y)
d) (x', y') = (-x, -y)
if these two figures are similar, what is the measure of angle b?
a) 35°
b) 70°
c) 95°
d) 130°
find the coordinates of the vertices of the figure after the given transformation.

reflection across the x-axis
a) u'(0, 5), p'(-1, 0), r'(3, -1), d'(3, 2)
b) u'(2, -4), p'(1, 1), r'(5, 2), d'(5, -1)
c) u'(-1, 3), p'(-2, 2), r'(2, 3), d'(2, 0)
d) u'(-4, -3), p'(-5, 2), r'(-1, 3), d'(-1, 0)