###### Exercise 13

Are the equations below linear equations in one variable?

\(4.61q=14\)

is

is not

\(5qVx=-42\)

is

is not

\(V^{2}+y^{2}=-68\)

is

is not

\(\pi r^{2}=48\pi\)

is

is not

\(7-2r=17\)

is

is not

\(r\sqrt{12}=-84\)

is

is not

Are the equations below linear equations in one variable?

\(4.61q=14\)

is

is not

\(5qVx=-42\)

is

is not

\(V^{2}+y^{2}=-68\)

is

is not

\(\pi r^{2}=48\pi\)

is

is not

\(7-2r=17\)

is

is not

\(r\sqrt{12}=-84\)

is

is not