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k0ka [10]
3 years ago
9

Use the substitution method to solve the given system of equations. Write

Mathematics
1 answer:
ehidna [41]3 years ago
7 0

Answer:

(-5/2 , 3/2)

Step-by-step explanation:

y=4+x

6(4+x) + 2x= 4

24 + 6x + 2x= 4

24 + 8x= 4

8x =4 - 24

8x=-20

x= -20/8= -5/2

y-(-5/2)=4

y+5/2= 4

multiply throughout by 2 to clear out fraction

2y + 5= 8

2y= 8-5

2y=3

y=3/2

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Answer: -4

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identify the expression that is not equivalent to the other three. Explain your reasoning. x-2+3x , 4(x-2) , -2+7x-3x, 4x-2
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Select the system of linear inequalities whose solution is graphed. <br><br> Please help !!!!
GrogVix [38]

\boxed{y\geq 3x-2, \ x+2y\leq 4}

<h2>Explanation:</h2>

First of all, we need to know the equations of the given lines. According to the options the equations of the lines are:

1. First equation: Written in Slope-Intercept Form:

y=3x-2

2. Second equation: Written in Standard Form:

x+2y=4

According to the graph, both lines are dashed meaning both inequalities must include either ≥ or ≤. So let's taste a point on the coordinate system in order to know which option is satisfied:

Hence, let's take point (0, 0):

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Therefore, the correct option is:

\boxed{y\geq 3x-2, \ x+2y\leq 4}

<h2>Learn more:</h2>

System of inequalities: brainly.com/question/12890742

#LearnWithBrainly

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