Scribe Post-Functions-Camila-February 3

HELLO,

Today the class focused on a few different things:

First we talked about the coordinate system and slope. Here are a few key points:

-If a curve has a slope then it's a straight line.

-Slope defines a straight line.

-Slope= rise/run.

-In any straight line the rise/run (slope) of any two points will have the same ratio

Then we concentrated on equations for a graph :

Slope intercept form: y=mx=b

Point slope: y-y+m(x1+x2)

Standard Form(the one we will be using): Ax+Bx=C

We then talked about how to find the x and y intercepts using the standard equation.

-To find the x-intercept substitute a zero for the y intercept

-To find the y-intercept substitute a zero for the x intercept

Here is an example problem

Find the x-intercept:

3x+5y=15

3x+5(0)=15

3x=15

3/3x=15/3

x=5 The x intercept is x. You can apply the same concept for finding the y-intercept