Question

After a reflection across the y = x, the image of triangle ABC is triangle A'B'C. if AB = 2x+13 is A'B' = 9x-8, find the value of x

Answer 1

x=3

Explanation:

2x+13=9x-8

subtract 9x on both side

you will have -7x+13= -8

then you subtract 13 on both side

you will have -7x = -21

dividend -7 on both side then you will find the value of x