###### Exercise 11

Are the equations below linear equations in one variable?

\(\sqrt{9-5.5r}=7\)

is

is not

\(2-3r^{2}=18\)

is

is not

\(x-6q^{2}=27\)

is

is not

\(2\pi r=2\pi\)

is

is not

\(8.59y=-9\)

is

is not

\(12-3z=4\)

is

is not

Are the equations below linear equations in one variable?

\(\sqrt{9-5.5r}=7\)

is

is not

\(2-3r^{2}=18\)

is

is not

\(x-6q^{2}=27\)

is

is not

\(2\pi r=2\pi\)

is

is not

\(8.59y=-9\)

is

is not

\(12-3z=4\)

is

is not