Decide whether the following tables have linear or non-linear data.

	$x$-values	$y$-values
	$-1$	${-3}$
Is data in the table linear or not?	$1$	${7}$
? Yes No	$2$	${12}$
	$4$	${22}$
	$7$	${37}$

	$x$-values	$y$-values
	$4$	${15}$
Is data in the table linear or not?	$8$	${31}$
? Yes No	$11$	${43}$
	$14$	${55}$
	$16$	${63}$

	$x$-values	$y$-values
	$-3$	${21}$
Is data in the table linear or not?	$1$	${5}$
? Yes No	$5$	${53}$
	$6$	${75}$
	$7$	${101}$