Which three options are true about the quadratic equation??
y= 4t^2 + 16t + 18
A. The graph has a minimum.
B. The graph of y crosses the horizontal axis at t = 10 and t = 20.
C. The equation 4t^2 + 16 + 18 = 6 has one real solution.
D. The function has a maximum at t = 10
E. The vertex is at (-2, 2)
F. The function could represent the height y (in metres) of a particle moving under gravity, as a function of the time t (in seconds).
G. The graph intercepts the vertical axis at y = 18
H. The slope of the graph of y is always negative.
which 3 are correct?
Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor with this specialty online right now, be sure to go back into your textbook or use a good search engine. ( http://www.sou.edu/library/searchtools/ )
Once YOU have come up with attempted answers to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your work.
=)
I see only 2 of them correct.
Try finding the vertex and evaluating b^2 -4ac