How do I answer these negatively like they already happened

Va a viajar a Perú tu primo Andrés?
Va a pagar las sandalias María en la caja?
Van a regatear con el vendedor Mónica y Carlos?
Va a pasear por la playa tu abuela?

go to google and type in babblefish it will translate it and all you do is figure out the rest and translate it back into spanish

Trying a Translation site is very bad advice. They never get the nuances of the language and they certainly don't teach you how to become proficient!

Was there a model or example to follow? Your instructions are not clear enough.

¿Va a viajar? No va a viajar. Is that what you mean? If it has already happened, that is NOT a negative!

Sra

To answer these questions negatively as if they have already happened, you can use the negative form of the verb "ir" (to go) in the past tense, followed by "no" and the verb in the past tense.

1. Va a viajar a Perú tu primo Andrés?
- No, mi primo Andrés no viajó a Perú.

2. Va a pagar las sandalias María en la caja?
- No, María no pagó las sandalias en la caja.

3. Van a regatear con el vendedor Mónica y Carlos?
- No, Mónica y Carlos no regatearon con el vendedor.

4. Va a pasear por la playa tu abuela?
- No, mi abuela no paseó por la playa.

Remember to conjugate the verb "ir" and the main verb in the past tense according to the subject and context of the sentence.