Answer:
No,
12.8 = 12.800
Obviously, 12.800 <u>< </u>12.815.

Answer:
1 and 2 are not congruent; 1 and 3 are congruent; 1 and 4 are congruent; 2 and 3 are not congruent; 2 and 4 are not congruent; 3 and 4 are congruent.
Step-by-step explanation:
From the diagram, we can see that the angle measures and side measures of figures 1, 3 and 4 are the same. This means that these three figures are congruent. Figure 2, however, is not congruent to any of the other 3.
Yes they are proportionate
The equasion is y= -1x=6 because it's subtractio one each time and the 0 figure is 6.