Practice problem
In which of the following equations is yyy a linear function of xxx?
y=7x−5xy=7x-\frac{5}{x}y=7x−x5 for nonzero xxx
y=6x+72y=6x+\frac{7}{2}y=6x+27 for all xxx
x=17yx=\frac{17}{y}x=y17 for nonzero yyy
y2=xy^2=xy2=x for x≥0x\geq0x≥0
Type a concept, like “slope” or “photosynthesis”.
