Answer:
y=1/2x+0.5
Step-by-step explanation:
The slope is 1/2, which you can see by looking at the change of y/x. The y intercept is 0.5, which can be seen on the y axis.
For #13
2squared+6squared=x
4+36=40
The square root of 40 is 6.32 so 6.3 is the length of the missing side :)
The value is 10 because 10*43.50 equals 435
The answer is x=2, Hope this helps! xD