Answer: 
Step-by-step explanation:
x^2+y^2=r^2 --> subtract x^2 to other side
y^2=r^2-x^2 --> square root both sides
y=sqrt(r^2-x^2)
The dashed line is because the sign is greater than to be a solid line it has to be equal to or greater than and to the shading means any point on there works for the equation easiest way to test where you should shade is by plugging into the equation the point (0,0)
Answer:
A
Step-by-step explanation:
Answer:
triangal
Step-by-step explanation:
Answer:

Step-by-step explanation:
Factor by grouping:
'-5' is a common factor.
Factoring out '-5'....

Hope this helps.