General Form :

Slope Y int Form: -2/-2(x-(-5))=y-7

y-7=-x-5

y= -x+2{-7<x<-5}

This week we have been learning about relations and functions. The difference between a relation and a function can be hard sometimes. We have learned that a function is when the input only has one output. However, a relation is when an input has multiple outputs. You can find the difference by looking at a graph. I will now show you how you find the f(x)= 8on a graph. I am using f(x) but it may be g(x) or even any letter because it is a variable. In the graph below we can see that the units increase by 4 each time. Now we are told in f(x)=8 to start with 8. So, we go to the domain (x) and find 8. Once we have found 8 we drag or finger or pencil along our paper towards the graph whether that is negative f(x) or positive. For this graph it is a positive number since the graph is in the positive section for both the f(x) and x also known as quadrant I . Once you have found the point of the graph that connects to the x = 8, drag your finger/pencil over to the f(x)/range and find or estimate what the f(x) is. In this case, it looks to be right in between 8 and 12 so I am going to go ahead and estimate that is is 10. Now we can state that the f(10)= 8.