For each function, determine whether y varies directly with x. if so, identify the constant variation
question 4y-7x=0
then i put 4y=7x
what to do next?

If 20% of a number is 35, what is 50% of that number?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️