SAT Circle length question | Desmos

Expression 4: left parenthesis, "x" minus "a" , right parenthesis squared plus "y" squared equals left parenthesis, "r" minus "a" , right parenthesis squared left brace, "y" greater than or equal to 0 , right brace

4

Expression 5: left parenthesis, "x" plus "r" minus "a" , right parenthesis squared plus "y" squared equals "a" squared left brace, "y" less than or equal to 0 , right brace

5

A: left parenthesis, negative 1 , 0 , right parenthesis

Label:

6

B: left parenthesis, 1 , 0 , right parenthesis

Label:

7

Expression 8: "y" equals 0 left brace, negative 1 less than or equal to "x" less than or equal to 1 , right brace

8

9

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