Solve y= 2x+ 3 and y= 4x+3

I came up with the answers (0,3) using both substitution and elimination methods. What is the "independent" variable and "dependent" variable? What would be a "real world situation" including independent and independent variables? I'm lost...

1 answer

Usually the dependent variable is on the left side. Its valye depends on the expression on the right side. The equation tells how to calculate the result of assigning a value to x.