How to read data from device in I2C?

Hello, I'm trying to figure out an error, when I realized that the problem is that I'm using wrong the I2C function. I need to read 8 bits from an address (0x75) in a i2c device (0x68). Following code is an example from libraries and docs:

I2C1.setup( {scl: NodeMCU.D4, sda: NodeMCU.D5} );

I2C1.writeTo(0x68,0x75);
var data = I2C1.readFrom(0x75,8);
console.log(data);

Got the next error:

Uncaught InternalError: I2CRead: No ACK 0
 at line 5 col 33
  var data = I2C1.readFrom(0x75,8);
                                ^
in function called from system

The readFrom function doesn't take as parameter the internal address of the device, that's why the error, is pointing to a device no to the internal address.

My device is an MPU9250, it works on Arduino and Micropython.