- Fri Mar 01, 2013 12:39 am
- Forum: Discrete Math
- Topic: Circular Permutations/ Combinations
- Replies:
**1** - Views:
**4620**

Problem: Ten points lie on a circle. How many inscribed quadrilaterals can be drawn having these points as vertices? My Thoughts: I'm trying to make a connection between this problem and one I already know: "Seven points lie on a circle, as shown in the figure. How many inscribed triangles can be dr...

- Thu Feb 28, 2013 7:18 am
- Forum: Beginning Algebra
- Topic: what is point slope form?
- Replies:
**3** - Views:
**5137**

y = mx + b is slope-intercept form, not point-slope form. The point-slope formula is y - y 1 = m(x - x 1 ), where you will most likely be given a point (x 1 , y 1 ) and a slope (m) that you can then substitute into the formula by replacing those variables with the numbers you were given in the probl...

- Thu Feb 28, 2013 6:44 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: why a number does not become negative when it's moved
- Replies:
**2** - Views:
**2866**

You are also able to reason through this by understanding the properties of equality and the properties of real numbers. y^2 = 2 + 5x Let's start from this step since this is where you got confused. The commutative property of addition says that you can add terms in any order, i.e. switch the order ...