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3 years ago

Find the solution of the system by graphing

Mathematics

1 answer:

zvonat [6]3 years ago

6 0

Answer:

x = -2

y = -1

(-2, -1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

y = x + 1

3x + 3y = -9

Step 2: Solve for x

Substitution

Substitute in y: 3x + 3(x + 1) = -9
Distribute 3: 3x + 3x + 3 = -9
Combine like terms: 6x + 3 = -9
Isolate x term: 6x = -12
Isolate x: x = -2

Step 3: Solve for y

Define original equation: y = x + 1
Substitute in x: y = -2 + 1
Add: y = -1

Step 4: Graph systems

Check the solution set.

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Step-by-step explanation:

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3 years ago

What is the range of the function f(x) = 3x2 + 6x – 8?

timama [110]

Answer:

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Step-by-step explanation:

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A quadratic equation's range can be found if we find the vertex.

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The formula for vertex of a parabola is:

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Where,

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