Send a transaction using passphrase and private key

[anjalialance]

Hi,

I want to make a transaction with the help of the passphrase or the mnemonics that I have generated using bip39. Now, I am having a private key and address generated by that particular mnemonics. How can I make a transaction using passphrase. Please help.
var decryptedAccount = web3js.eth.accounts.encrypt(keyStore, 'Password');
I am using this but I don't have a keystore can I use only password and not the keystore or i can include there my private key. Suggest.

Thanks in advance.

[nivida]

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