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x-variable transformation
section1: translation parallel to x-axis
section2: scaling parallel to x-axis
section3: reflection about y-axis
section4: modulus x graph

y-variable transformation
section5: translation parallel to y-axis
section6: scaling parallel to y-axis
section7: reflection about x-axis
section8: square root graph
section9: graph of y^2 = f(x)
section10: graph of 1/f(x)
section11: modulus y graph
section12: dy/dx graph

section13: compound transformation