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No. It's an equation.
" 3x squared - 2 " is a function. As soon as you made it equal to something, you had an equation.
Well, if 3x equals 12, then x equals 4. And if y equals 3x, then y equals 3 times 4, which is 12. So, y equals 12. Math can be a piece of cake when you break it down like that!
-9
3x-y=9 y=3x-9
y= -4x-7 y=3x 3x= -4x-7 3x+4x=7 7x=7 x=1
1) y - 7y = 36 -6y = 36 y = -6 We know that, y = 3x -6 = 3x x= -2 Conclusion, y= -6, x = -2