Y= 3x - 1
What is the rate of change

-3/1

Step-by-step explanation:

y = -5

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

-9 = 2(18) + 9y

Step 2: Solve for y

Multiply:                                   -9 = 36 + 9ySubtract 36 on both sides:     -45 = 9yDivide both sides by 9:           -5 = yRewrite:                                     y = -5

Step 3: Check

Plug in y to verify it's a solution.

Substitute:                    -9 = 2(18) + 9(-5)Multiply:                        -9 = 36 - 45Subtract:                       -9 = -9