PE = m•g•h, where m is mass in kg, gis 9.8m/s2, and h is height above the earth in meters. If an object is on the ground, it's height above the earth is zero, so it has zero PE.
2 because it is the number being added to the zero intercept in the equation
Simplified the answer is -9x^2 + 12xy
Answer:

Step-by-step explanation:
0.51 is the answer since the nine converts the zero before it to a 1