Does it matter what interval you use when you find the rate of change of proportional representationship? explain

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

Can anyone me with this question?