Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

No, Backes. An incline just means that there is upward or downward deviation.  Look at the example provided by The Free Dictionary: "The car rolled down the incline." 

incline

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in·cline

 (ĭn-klīn′)

v. in·clined, in·clin·ing, in·clines

v.tr.

1. To cause (someone) to have a certain tendency: dispose: "His active, daring temperament little inclined him to patient, quiet study" (Harriet Beecher Stowe).

2. To dispose (someone) to have a certain preference or opinion or to take a course of action: I'm inclined to agree with you. Are you inclined to go to out tonight?

3. To cause to lean, slant, or slope: "Galileo ... inclined the plane and rolled brass balls down it" (George Johnson). See Synonyms at slant.

4. To bend or lower in a nod or bow: I inclined my head in acquiescence.

v.intr.

1. To be disposed to a certain preference, opinion, or course of action: Some researchers incline toward a different view of the problem.

2. To deviate from the horizontal or vertical; slant: When the path inclined steeply, it became difficult to continue hiking.

3. To lower or bend the head or body, as in a nod or bow.

n. (ĭn′klīn′)

An inclined surface; a slope or gradient: The car rolled down the incline.

Then, there's this, which defines "incline" as a deviation from a particular plane, especially vertical or hoizontal but says nothing about whether it is up or down.  

incline

vb

1. to deviate or cause to deviate from a particular plane, esp a vertical or horizontal plane; slope or slant

2. (when: tr, may take an infinitive) to be disposed or cause to be disposed (towards some attitude or to do something): he inclines towards levity; that does not incline me to think that you are right.

3. to bend or lower (part of the body, esp the head), as in a bow or in order to listen

4. incline one's ear to listen favourably (to)

n

5. an inclined surface or slope; gradient

Again: nothing about going from high to low. 

This is from Merriam-Webster:

¹incline

verb in·cline \in-ˈklīn\

: to bend forward or to cause (something) to bend forward
: to lean or slope

: to cause (someone) to want to do something or to be likely to do something

Full Definition of INCLINE

intransitive verb

1

:  to bend the head or body forward :  bow

2

:  to lean, tend, or become drawn toward an opinion or course of conduct

3

:  to deviate from a line, direction, or course; specifically :  to deviate from the vertical or horizontal

What applies is #3: to deviate from a line, direction, or course, specifically: to deviate from the vertical or horizontal. 

It says nothing about whether the incline goes up or down, whether it rises or falls. And why should it? It could be either up or down, depending on your perspective. 

I knew that. I thought everybody knew that. And if you had any doubt about it, why didn't you check the definition before you opened your big fat mouth??? Why do you keep walking into traps of your own making???? It's because you're an idiot: a blithering stupid idiot, and it's what you're always going to be. 

Think, Backes, think: The car rolled down the incline. The car rolled down the incline. The car rolled down the incline. It's from the dictionary. The car rolled down the incline.