Answer:
a=1
Step-by-step explanation:
Subtract 2a from both sides to get the variable on one side.
Now you have -5=-5a.
Divide by -5 to get the variable by itself.
Answer:C) x2 + y2 =45
The equation of a circle in standard form is (x-h)2+(y-k)2=r2.
Since you know the center is (0,0), you can sub this is value in for h and k, then use the point (3,6) to sub in for x and y and you will find r2 =45. Hope that helps :)
Since the graph looks like this, I would say solid line
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