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2 years ago

Use the substitution method to solve the system of equations

Mathematics

1 answer:

yarga [219]2 years ago

5 0

Answer:

C. (3,2)

Step-by-step explanation:

to begin the substitution method, we can begin by substituting the answer choice value into the given system or equations to determine if the values make the equation true.

the first choice is (2,1)

3(2) + 2(1) = 13

6 + 2 is not equal to 13. Therefore this answer choice is incorrect.

second choice (1,2)

3(1) + 2(2) = 13

3 + 4 is not equal to 13. This answer is also incorrect.

third choice (3,2)

3(3) + 2(2)

9 + 4 = 13 is true!

we can also substitute these x and y values for the equation underneath:

y = x - 1

2 = 3 - 1

2 = 2 is true! Therefore, C. (3,2) is correct!

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<u>Answer: </u>

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<u> Solution: </u>

We need to simplify following expression.

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Answer:

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B) $y=4x+2$ - Linear

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Step-by-step explanation:

To determine whether a function is linear or nonlinear.

The function of a straight line is given as :

$y=mx+b$

where $m$ represents slope of line and $b$ represents the y-intercept.

Any function that can be represented as a function of straight line is called a linear function otherwise it is nonlinear.

We will check the equations given for linear or nonlinear.

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B) $y=4x+2$

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On solving for $y$

Dividing both sides by $x$

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