Angle E=130degrees because those two are congruent. Therefore if you 180-130 you'll get the other angle in the triangle with 70degrees and y. 180-130=50degrees. Then add 50 and 70. 50+70=120degrees. A triangle is supposed to have 180 degrees inside.
180-120=60degrees.
Therefore y=60degrees
We are given
(a, b) ---------------> (a, −b)
we can see that
x-values of both points are 'a'
which is same
while y-value of first =b
y-value of second =-b
so, y becomes as -y
and we know that
when a function is reflected about x-axis
then y becomes -y
so, option-C.................Answer
