Enter the y coordinate of the solution to this system of equations.

y = –2x + 9
–x – y = –1

If g(x) is an odd function, which function must be an even function?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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