Question

Answers for both boxes please ​

Answer 1

Answer:

(-3, -6)

Step-by-step explanation:

y=2x

-3x-15=y

Use Substitution Method

-3x-15=2x

+3x      +3x

-15=5x

/5   /5

-3=x

y=2x

y=2(-3)

y=-6

Answer 2

Answer:

(-3, -6)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Algebra I

• Solving systems using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 2x

-3x - 15 = y

Step 2: Solve for x

1. Substitute in y:                    2x = -3x - 15
2. Isolate x terms:                   5x = -15
3. Isolate x:                              x = -3

Step 3: Solve for y

1. Define equation:                     y = 2x
2. Substitute in x:                        y = 2(-3)
3. Multiply:                                   y = -6