Worth 75 points
△abc is reflected to form △a′b′c′ .

the vertices of △abc are a(−7,1) , b(−5,−3) , and c(−3,2) . the vertices of △a′b′c′ are a′(−7,−1) , b′(−5,3) , and c′(−3,−2) .

which reflection results in the transformation of △abc to △a′b′c′ ?

a. reflection across the x-axis

b. reflection across the y-axis

c. reflection across y = x

d. reflection across y=−x