Expression 9: "y" equals StartFraction, "c" Over "a" , EndFraction left parenthesis, "x" minus StartFraction, "c" Over 2 , EndFraction , right parenthesis plus StartFraction, "a" Over 2 , EndFraction left brace, "y" less than or equal to "a" , right bracey=cax−c2+a2y≤a
9
Expression 10: "y" equals StartFraction, "c" Over "a" plus "b" , EndFraction left parenthesis, "x" minus StartFraction, "c" Over 2 , EndFraction , right parenthesis plus StartFraction, "a" plus "b" Over 2 , EndFraction left brace, "y" greater than or equal to "a" plus "b" , right bracey=ca+bx−c2+a+b2y≥a+b
10
Expression 11: 2 "c" left parenthesis, "x" minus StartFraction, "c" Over 2 , EndFraction , right parenthesis equals "y" squared left brace, "a" less than or equal to "y" less than or equal to "a" plus "b" , right brace2cx−c2=y2a≤y≤a+b