Question

y = x - 4
y = 4x + 2
x=
y =

Answer 1

Answer:

(-3/2, -11/2)

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

• Equality Properties
• Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = x - 4

y = 4x + 2

Step 2: Solve for x

Substitution

1. Substitute in y:                    x - 4 = 4x + 2
2. Isolate x terms:                   -4 = 4x + 2
3. Isolate x term:                     -6 = 4x
4. Isolate x:                              -3/2 = x
5. Rewrite:                               x = -3/2

Step 3: Solve for y

1. Define equation:                    y = x - 4
2. Substitute in x:                       y = -3/2 - 4
3. Subtract:                                 y = -11/2

Answer 2

Answer by Khan Academy:

x=−2

y=−6

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Step-by-step explanation: