Hi, ok all you need to do is use the direct variation formula which is= y/x=y/x so you will replace your numbers by each value which get us to = 3/-6=y/1 so you cross multiply which gives us 3=-6y you divide 3 by -6 and that is the value of y, thank you for reading hope it helps ;)
You are inversing for subtraction which is addition so D
£350 because 420/6 is 70 and 70*5 is 350
The nearest hundredth would be 0.17
Its when you move the decimal to the right
