Question

Use the substitution property of equality to complete the following statement if y=3 and 8x+y=12,then_

A)3-y=12
B)8(3)-y=12
C)8x-3=12
D)8x+3=12
Heeelllppp plz

Answer 1

The answer is D) 8x+3=12

Answer 2

The answer is D)
`8x+3=12`

Explanation:

In order to determine the correct option, we have to know about the substitution property.

The substitution property is when we replace the variable of the equation by a number. For example:

Given

`x+y=12\\x=3\\\\3+y=12\\y=12-3\\y=9`

In this example, we applied the substitution property replacing the "x" variable by 3.

For this case:

`8x+y=12\\y=3\\\\8x+3=12`

So, the final expression is matching with the D) option.

Finally, the correct answer is D)
`8x+3=12`