What is the first step to solve this equation?

2x + 3 = 13

Move all terms not containing

x

to the right side of the equation.

Tap for more steps...

2

x

=

16

Divide each term by

2

and simplify.

Tap for fewer steps...

Divide each term in

2

x

=

16

by

2

.

2

x

2

=

16

2

Cancel the common factor of

2

.

Tap for more steps...

x

=

16

2

Divide

16

by

2

.

x

=

8

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.