**Slope intercept form:****y = m*x + b**

**Localization points** is what these two intercepts are:

**Y-intercept:** When the x-value is 0, and the b-value of the function (0, b)

**X-intercept:** When the y-value is 0, x = -b/a

It is pretty cool, because you can use the two points gathered by the two intercepts, and from those, you can **graph** the function

If **a**_{2}** * a**_{1}** = -1**, where the two a’s are the slope of two linear functions, then the two linear functions are **perpendicular**

**The way to find a perpendicular line:**

Take the reciprocal/opposite of the slope of the normal function

Linear equations (Also called straight lines) can also be written like **Ax + By = C**, but you basically just find y and make it look like the normal y = m*x + b form

**A solution to a linear function** is apparently just a point that is on the graph for some reason

So you can find it by just plugging in the point into the function and see if it equals

Ex.

y = 2x-1 , P(3, 2)

y = 2(3) – 1 = 5

2 does not equal 5, so not a solution

**The way to find the radius and diameter of a circle** is to simply take the distance from the center to some point on the circle

**The Slope formula:**

**Point Slope form (a=m):**

Ex.

Used when you know the** slope and ONE point**

**The way to find b, if you have the slope and a point:**

Just plug in the point and slope into the y=mx+b formula and then solve for b

**NOT all linear models are perfect** and usually only work within a small domain/timeframe etc.

**Parallel lines:**

The two functions have the same slope, but different b-values

You can find the parallel line by just plugging in in the point you get, and then solve for b, as you already have the slope