Find the solution of the system by graphing y=x+1
3x+3y=-9
Part B: The solution to the system, as an ordered pair,

x = -2

y = -1

(-2, -1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Algebra I

Solving systems of equations using substitution/eliminationSolving 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) = -9Distribute 3:                                   3x + 3x + 3 = -9Combine like terms:                     6x + 3 = -9Isolate x term:                               6x = -12Isolate x:                                        x = -2

Step 3: Solve for y

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

Step 4: Graph systems

Check the solution set.