I don't know could I get some help please.

(-3, -11)

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 = 7x + 10

y = -4x - 23

Step 2: Solve for x

Substitution

Substitute in y:                                                                                                7x + 10 = -4x - 23[Addition Property of Equality] Add 4x on both sides:                                11x + 10 = -23[Subtraction Property of Equality] Subtract 10 on both sides:                     11x = -33[Division Property of Equality] Divide 11 on both sides:                               x = -3

Step 3: Solve for y

Define original equation:                                                                               y = 7x + 10Substitute in x:                                                                                                y = 7(-3) + 10Multiply:                                                                                                           y = -21 + 10Add:                                                                                                                 y = -11