Atank filled 12 gallons in 2mins, after 5 it contained 30 gallons. what is the constant rate of change?

Hello.

The constant rate of change is 6 gallons. To figure this out, divide the amount of gallons it was filled to, and the minutes. 12 ÷ 2 = 6. It's constant rate would be: 6gal / 1min,   12gal / 2min,   18gal / 3min,    24gal / 4min,    30gal / 5min, etc.

so then what are you asking?

step-by-step explanation:

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )