Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (anonymous):

Check my answer? http://prntscr.com/5z214f

Directrix (directrix):

I think the slope on the choice you made is incorrect.

Directrix (directrix):

(0, -4) and (1, 0) are two points on the graph. Slope is change in y over change in x. ( -4 - 0) all over (0 - 1) = -4/(-1) = 4. Your choice has 1/4 as slope so option B is not correct.

Directrix (directrix):

@24/7

Directrix (directrix):

Try again.

OpenStudy (anonymous):

C?

Directrix (directrix):

No. y = 4x - 1 crosses the y-axis at y = 4*0 - 1 = -1. The given graph has to pass through (0, -4) Look at it.

Directrix (directrix):

So, what is the answer? Let's get a wrap, okay?

OpenStudy (anonymous):

A

Directrix (directrix):

Option A has the wrong slope: -4 and +4 are as different as day and night.

Directrix (directrix):

That leaves only one option.

OpenStudy (anonymous):

Thank you.

Directrix (directrix):

You are welcome.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!