A cross section is the shape you get when you cut straight through an object Like a prism so
you will get a triangle example:
In geometry it is the shape made when a solid is cut through by a plane. The cross section of a circular cylinder is a circle or a cross section of a pyramid is a rectangle. A two dimensional figure like a rectangle has two dimensions length and width. A three dimensional figure like a building has three dimensions length width and height.
Its 0 because the slope would be one if it was a positive line and itd go up and across one unitl and it is undefined if it is parallel to the y axis
Answer:
11 and 1/4 yards of ribbon
Step-by-step explanation:
Hope this helps you! :)
We have two options in the case of the equation for parabola y=ax²:
1) in the case that a is negative the parabola opens down
2) in the case that a is positive the parabola opens up
So the correct answer is: if a is positive, the parabola opens up.
