Find the distance between points (-4, -6) and (5, -1).
THIS is what i have now:
sqroot (-9)^2 + (-5)^2

Question

Find the distance between points (-4, -6) and (5, -1).
THIS is what i have now:
sqroot (-9)^2 + (-5)^2

anonymous · Answer

I'm confused on what to do next ....

radar · Answer

Sum those squares and then take the square root of the sum.

anonymous · Answer

Find the distance between points (-4, -6) and (5, -1).

anonymous · Answer

I did the second part..

radar · Answer

$$\sqrt{106}$$

anonymous · Answer

-9^2 = invalid?

radar · Answer

(-9)(-9)=81

radar · Answer

No not invalid, you have the correct data, just use it.

anonymous · Answer

oh okay.
thank you !

radar · Answer

You are using the distance formula which is$$\sqrt{(x1-x2)^{2}+(y1-y2)^{2}}$$$$\sqrt{(-9)^{2}+(-5)^{2}}=\sqrt{106}$$

anonymous · Answer

can you help me with this?
.
What is the equation of a parabola with vertex (0, 0) and directrix x = -3.


Write the equation of an ellipse centered at the origin with foci at (0, -3) and (0, 3) and a major axis of 10.

anonymous · Answer

those are my last qeustions

radar · Answer

I need to review these for a while, the term directrix is unfamiliar to me, I know very little about it  sorry, repost the question and I believe there are many that will help who are familiar with directrix and ellipse.