Sound, earthquakes, the brightness of stars, and chemistry, such as pH balance, a measure of acidity and alkalinity, are all instances of this.
Given:
The values of input and outputs are given
Output is increasing by 9 for the increase in x values.

Answer:
7 goldfish
Step-by-step explanation:
10-3=7
C is the rigth answer because all the other three has two x values in common. :)
Answer:
slope is zero
Step-by-step explanation:
zero slope is neither positive or negative; it indicates no change whatsoever