Help me plse Write the system of equations for the following scenario:
The sum of twice the square of the first number plus the second number is 9.
The difference between twice the first number and the second number is 15.
Linear Equation:
Quadratic Equation:

The slope of cd is which segments are perpendicular to cd ? select each correct answer. gf , where g is at (6, 5)and fis at (10, 2) ef, where e is at (4, 1) and f is at (7,5) lm , where lis at (-2, 3) and m is at (-10, 9) jk , where jis at (1, -2) and k is at (10, – 14) next