There can be 2 answers depending the proportionality between y and x Assuming y is directly proportional to x [tex]y=kx[/tex] where k is constant of proportionality [tex]8=20k[/tex] [tex]k=\frac{8}{20}=\frac{2}{5}[/tex] [tex]y=\frac{2}{5}x[/tex] [tex]y=\frac{2}{5}*10[/tex] [tex]y=4[/tex]
Assuming y is indirectly proportional to x [tex]y=\frac{k}{x}[/tex] where k is constant of proportionality [tex]8=\frac{k}{20}[/tex] [tex]k=160[/tex] [tex]y=\frac{160}{x}[/tex] [tex]y=\frac{160}{10}[/tex] [tex]y=16[/tex]
