Question

2.) Which number could NOT be a value of y if:y = 4x2-6a.)30b.)10c.) -6d.)-12

Answer 1

You have the following expression:

y = 4x² - 6

consider that for any value of x, the term 4x² is always a positive number, then, if you have, for instance, x = 0, then y = -6. This is the least value y can have.

Hence, from the answer choices you have:

d) -12 could not be a value of y