Both the points (2,-2) and (4,-4) are solutions of a system of linear equations . what conclusions can you make about the equations and their graphs?

For what value of (y) is 3^3/3^y =1/9

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

I’m really confused and need your assist me with this question i’ve never been taught