Question

What is the range of y = 2x2 - 4?
A. y ≥ 2
B. y ≥ -4
C. y ≤ -4
D. y: all real numbers

Answer 1

I know it is not D, because it is only the range that has all real numbers

Answer 2

i can give you something to help you hold on.....

Answer 3

Okay awesome thanks

Answer 4

http://www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U17_L2_T3_text_final.html
this has a chat that shows solutions for different types of problems

Answer 5

@Michele_Laino

Answer 6

http://www.freemathhelp.com/domain-range.html
this might also help
im sorry i cant help you though it i dont really know how plus i cant directly anserw you because of the code of conduct

Answer 7

Alright thanks

Answer 8

the equation y=2x^2-4 represents a parabola, whose vertex V has the subsequent coordinates:
V=0,-4)
here is that parabola:

Answer 9

Thanks!

Answer 10

Thanks!

Answer 11

do you need more help?