On a coordinate plane, the location of 3 points are: (0,,-4), and (-1,-5). where would the fourth point need to be located in order to form a parallelogram?

(-6, 5)

Step-by-step explanation:

The slope of the segment from (0, 6) to (5, -4) is

m = (6--4)/(0-5) = (6+4)/(-5) = 10/(-5) = -2

The slope of the segment from (-1, -5) to (5, -4) is

m = (-5--4)/(-1-5) = (-5+4)/(-6) = (-1)/(-6) = 1/6

In order to be a parallelogram, the slopes of opposite sides must be the same.  This means the slope of the segment across from the segment with a slope of 1/6 must also have a slope of 1/6.

Working from (0, 6), to find the point with a slope of 1/6 we will work backward; going down 1 and back 6, we have (0-6, 6-1) = (-6, 5).

cone

Step-by-step explanation:

If in the image you can see that the vertex with the angle of 90° is in the (0,0), then, looking at only the changes in the other vertex, we have.

Before the rotation, we have one vertex in the x = 0 line, and other vertex in the y = 0 line.

After the rotation, the vertex in the y = 0 line will draw a circle, while the point in x= 0 will not do anything (because the point is colinear to the axis of rotation).

Then our figure has a circular base and ends on a point, connecting those figures we can se that the figure is a cone.