40. In the standard (x,y) coordinate plane, given Parabola A with equation y = 3x², Parabola B is the image of Parabola A after a shift of 7 coordinate units to the left and 4 coordinate units down. Parabola B has which of the following equations?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

Move the graph of y=3x² to the left by 7 coordinate units on the coordinate axis, and move it down by 4 coordinate units. The function equation B after moving according to "left plus right minus, up plus down minus" is y= 3(x+7)²-4.