If you use/make a number line, then you will see that the answer is -18 or a. When using a number line, negative = ← and positive = →.
<u>Given</u>:
The given graph represents the cost of the Kayak's rental per hour.
The coordinates are (2,30) and (3,45)
We need to determine the unit rate of renting per hour.
<u>Unit rate of renting:</u>
The unit rate of renting can be determined using the formula,

Substituting the coordinates (2,30) and (3,45), we get;

Simplifying, we get;

Dividing, we get;

Thus, the unit rate for renting a Kayak is $15 per hour.
4/2=2
4/3=1.33
4/4=1
4/5=0.8
4/0= undefined
It would mean a nonzero integer. Due to the fact that a non-zero x a non-zero integer equals a nonzero integer. But here is the question, if the nonzero integer equals the amount of dog food my dog consumes how am I supposed to paint the walls red if the cat won't jump off the nonzero integer. The fish won't slide therefore the bird can't swim.