A. Which of the following are quadratic functions? Write the letters of your answers inside the box.
a. y 3x² - 2
b. x = y
c. y = 3x² - 6x-2
d. 3x - 1 = y QUADRATIC FUNCTIONS
e. y = (x + 3) (x - 4)
f. y = x²
g. 42 + x = y
h. y = 4* + 2x + 3
i. x + x² = 37
j. x (x + 3) - y = 0 =​