1. Which of the following is the x-coordinate of the solution to the system shown below? (1) x = 9
(3) x=13
(2) x = 2
(4) x = 18
x+y = 11
x - y = 7

x=9

Step-by-step explanation:

Using elimination method.

Add equation 1 to equation 2

x + y = 11

x - y = 7

2x + 0 = 18

Divide both sides by 2

2x = 18

2 2

x = 9

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

step-by-step explanation: