La pendiente es larga.

Because pendiente is a feminine noun when it means slope or incline, so it takes the feminine article la.

• la pendiente = the slope
• una pendiente = a slope

Be careful: pendiente can mean other things in other contexts. For example, in some varieties of Spanish, un pendiente can mean an earring, which is masculine. So the gender depends on the meaning.

Because adjectives in Spanish usually agree in gender and number with the noun they describe.

Since pendiente here is feminine singular, the adjective must also be feminine singular:

• la pendiente larga
• la pendiente es larga

Compare:

• el camino es largo = the road is long
• la pendiente es larga = the slope is long

Es comes from ser, and está comes from estar. In this sentence, ser is used because larga is describing a more basic characteristic of the slope, not a temporary condition or location.

So:

• La pendiente es larga = The slope is long.

Using está larga would sound unusual in most contexts. For physical qualities like this, ser is the normal choice.

Es means is. It is the third-person singular form of ser.

So:

• La pendiente = the slope
• es = is
• larga = long

Together: The slope is long.

In Spanish, adjectives often come after the noun, especially when they describe a basic quality.

So:

• la pendiente larga = the long slope

And in a full sentence:

• La pendiente es larga = The slope is long

This is normal Spanish word order. English speakers often expect the adjective before the noun, but Spanish commonly puts it after.

Yes, but it is less neutral and can sound more literary, descriptive, or emphatic.

• la pendiente larga = the long slope, neutral
• la larga pendiente = the long slope, with extra emphasis or a more descriptive tone

In your sentence, La pendiente es larga, the adjective comes after es because it is the predicate adjective, so that part does not change.

No. Pendiente has several meanings depending on context. Common ones include:

• slope / incline
• pending
• earring in some regions or contexts

Examples:

• La pendiente es larga. = The slope is long.
• Tengo una tarea pendiente. = I have a pending task.
• Lleva un pendiente de oro. = She is wearing a gold earring.

So context matters a lot.

No. Larga means long, not steep.

This is an important distinction:

• larga = long
• empinada = steep

So:

• La pendiente es larga. = The slope is long.
• La pendiente es empinada. = The slope is steep.

A slope can be long, steep, both, or neither.

A simple pronunciation guide would be:

lah pen-dee-EN-teh es LAR-gah

A few notes:

• pendiente is stressed on dien: pen-di-EN-te
• larga is stressed on lar: LAR-ga
• The g in larga is a hard g, like in go

If you want to sound more natural, link the words smoothly: La pendiente_es larga.

Because none of the words need a written accent according to normal Spanish stress rules.

• la: one syllable, no accent mark needed
• pendiente: stress naturally falls on the second-to-last syllable, which is normal for a word ending in a vowel
• es: one syllable
• larga: stress naturally falls on the second-to-last syllable, also normal for a word ending in a vowel

So the spelling is standard without written accents.

Yes, it is grammatical and natural, especially in a descriptive or geographical context.

That said, in everyday speech, some speakers might use cuesta instead of pendiente, depending on the region and situation:

• La pendiente es larga.
• La cuesta es larga.

Both can refer to a slope, but pendiente can sound a bit more technical or formal in some contexts, while cuesta may sound more everyday.

Yes. Spanish often expresses the same idea with fewer words than English.

For example, Spanish does not need an extra word for it here. English says:

• The slope is long

Spanish simply says:

• La pendiente es larga

Also, Spanish articles and adjective endings carry information about gender and number, which English usually does not show.

The structure is:

subject + verb + adjective

Breaking it down:

• La pendiente = subject
• es = verb
• larga = adjective describing the subject

This is a very common pattern in Spanish:

• La casa es grande. = The house is big.
• El libro es interesante. = The book is interesting.
• La pendiente es larga. = The slope is long.