Zach tried to solve an equation step by step. 4

3



4

3



+

2

1



4

5





=z−

2

1



=z−

2

1



+

2

1



=z



Step 1

Step 2



Find Zach's mistake.

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96

this cant be answered without the graph. you may need to add it.

in the simple case, the two triangles point x and y are congruent because every corresponding side has the same length, and every corresponding angle has the same measure.