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Virty [35]
3 years ago
12

I need help please????

Mathematics
2 answers:
Feliz [49]3 years ago
8 0

Answer:

x = - 1

Step-by-step explanation:

Given

3x + 2 = y and y = - 1

Substitute y = - 1 into the equation and solve for x, that is

3x + 2 = - 1 ( subtract 2 from both sides )

3x = - 3 ( divide both sides by 3 )

x = - 1

This is verified by the point on the graph with coordinates (- 1, - 1)

Molodets [167]3 years ago
3 0

Method 1: By substitution

Step 1: In the equation 3x + 2 = y when you see a y replace it with -1

3x + 2 = -1

Step 2: Combine like terms by subtracting 2 to both sides

3x + (2-2) = -1 - 2

3x = -3

Step 3: Isolate x by dividing 3 to both sides

\frac{3x}{3} = \frac{-3}{3}

x = -1

Method 2: By looking at the graph

To solve this way you see where the line on the graph has y = -1 and look for its complimentary x

If you look at the graph attached below you can see that at y = -1 the x also equals -1

x = -1

Hope this helped!

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Answer:

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Step-by-step explanation:

Let's solve the expression for x = -5 and y = 25, this way:

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Replacing x and y, we have:

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