Name the functions of the graphs a, b, c, d

• A. \( a\;:f\left( x \right) = x;\;b\;:f\left( x \right) = \left| x \right|;\;c\;:f\left( x \right) = {e^x};\;d\;:f\left( x \right) = x + 2\)
• B. a : f(x) = x + 1; b : f(x) = x2; c : f(x) = log x; d : f(x) = x - 2
• C. \(a\;:f\left( x \right) = - x;\;b\;:f\left( x \right) = \left| x \right|;\;c\;:f\left( x \right) = - {e^x};\;d\;:f\left( x \right) = x + 2\)
• D. \(a\;:f\left( x \right) = x;\;b\;:f\left( x \right) = \left| {{x^2}} \right|;\;c\;:f\left( x \right) = {e^x};\;d\;:f\left( x \right) = x - 2\)