Please help I’ve been stuck on this. :/

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4