What is the constant in the term 12x + 6?

-2

Step-by-step explanation:

Rewrite the equation as

6

y

=

−

12

x

.

6

y

=

−

12

x

Divide each term by

6

and simplify.

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Divide each term in

6

y

=

−

12

x

by

6

.

6

y

6

=

−

12

x

6

Cancel the common factor of

6

.

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y

=

−

12

x

6

Cancel the common factor of

−

12

and

6

.

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y

=

−

2

x

Since the equation can be written in the form

y

=

k

x

,

y

varies directly with

x

and

k

. The constant of variation,

k

, is

−

2

.

b. 2 and 4

step-by-step explanation: