What is the rate of change for the linear relationship modeled in the table?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

The anwser cause i do not understand just plez

Yvaries inversely as x. y =12 when x=5. find y when x=4