I'm so confused by these equations can you please explain it to me?

The value of y varies directly with x, and y = 343 when x = 49. Find y when x = 8. V 56 V O 17 O 7 49 Question 2: 10 pts Write the inverse variation function given that y varies inversely with x, and y = 2 when x = 8. O y = 4x O y= 16x O y - 16 O y= Question 3: 10 pts Write the direct variation function given that y varies directly with x, and y = 16 when X = 4, O x = 4y O y= 0.25x O y= 12x O y = 4x Question 4: 10 pts The pressure P of a gas varies directly with the temperature T and inversely with the volume V. A certain gas has a volume of 6 liters (L). a temperature of 400 Kelvins (K). and a pressure of. 2.4 atmospheres (atm). If the gas is expanded to a volume of 15 L and is heated to 850 K, what will the new pressure be? 0.0008 atm 3.69 atm 1.56 atm 0.56 atm Previous here to search O (25 W