Could anyone please find x and with work, I am confused by the problem and need help.

X=21

Step-by-step explanation:

8(21)-77=91   and    3(21)+28=91

They are the same angle

y=mx+b

step-by-step explanation:

m slope, b y-intercept

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl