4. here is an equation that is true for all values of x: 5(x + 2) = 5x + 10. elena saw this equation and says
she can tell 20(x + 2) + 31 = 4(5x + 10) +31 is also true for any value of x. how can she tell? explain
your reasoning

7

step-by-step explanation:

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

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊