Use the substitution method to solve the system of equations. Choose the correct ordered pair. y=6x-4 y=7x-7

(3, 14)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Algebra I

Coordinates (x, y)Terms/CoefficientsSolving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 6x - 4

y = 7x - 7

Step 2: Solve for x

Substitution

Substitute in y [1st Equation]:                                                                           6x - 4 = 7x - 7[Subtraction Property of Equality] Subtract 7x on both sides:                       -x - 4 = -7[Addition Property of Equality] Add 4 on both sides:                                     -x = -3[Division Property of Equality] Divide -1 on both sides:                                 x = 3

Step 3: Solve for y

Substitute in x [2nd Equation]:                                                                         y = 7(3) - 7Multiply:                                                                                                             y = 21 - 7Subtract:                                                                                                             y = 14

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