The substitution method consists of finding the value of a variable from one equation and then putting it into another equation to find the value of other variable.

Given equations are:

$2x+y=8\\-x-3y=-12$

We have to isolate x in the 2nd equation

$-x-3y=-12$

Multiplying equation by -1

$x+3y=12$

Subtracting 3y from both sides

$x+3y-3y=12+3y\\x=12+3y$

Hence,

Option A. зу + 12 is the right answer

Keywords: linear equations, Variables

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4 0

3 years ago

Estimate. then find the product 1374 x 6

rewona [7]

The estimate (1370x6) is 8,220
the product (1374x6) is 8,224

5 0

3 years ago

Is the following not a function ?

il63 [147K]

Answer:

Yes

Step-by-step explanation:

The "x" is not supposed to be the same. The input has to be different.

4 0

3 years ago

Read 2 more answers