What methods could you use to calculate the x-coordinate of the midpoint of a horizontal segment with the endpoints of (-20, 0) and (20, 0)?
A. divide 0 by 20
B. divide 2 by 20
- C. calculate the average of the x-coordinates
D. take the average of the endpoints
M
E. divide 20 by 2

c

Step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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