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3 years ago

Use the substitution method to solve the system of equations. Choose the correct ordered pair.3x + y = 10y = x – 2

Mathematics

2 answers:

icang [17]3 years ago

8 0

Answer: B. (3,1)

Step-by-step explanation:

The given system of linear equations :-

$3x + y = 10......................(1)\\\\y = x - 2..................(2)$

Substitute the value of y from equation (2) in equation (1), we get

$3x + (x-2) = 10\\\\\Rightarrow\ 4x-2=10\\\\\Rightarrow\ 4x=12\\\\\Rightarrow\ x=3$

Now, substitute the value of x in equation (2), we get

$y=3-2=1$

Hence, the solution of the given system of equation = (3,1)

almond37 [142]3 years ago

4 0

B. For the easiest way to find this, solve the first equation for y and then plug into the second equation for y.

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liraira [26]

Answer:

Option 3 - f(x)= 4x, $g(x) = \frac{1}{4}x$

Step-by-step explanation:

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Now, we find one by one

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