Solve the following system of equations then determine the greatest y value of your solution set.
y = -2x^2+ 3x-1
y = x- 1

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)