Every time we multiply or divide by a negative number on both sides we flip the inequality sign. Lets look at an example
3>2 this is a true statement so even if we multiply the both side by 2 the equation would remain true
3*2>2*2
6>4 so true
So lets look at the equation -2x>10
So divide both sides by -2
-2x/-2>10/-2
x>-5
x<-5
Anytime you divide by a negative number the inequality sign needs to be reversed, in order to keep everything correct we need to reverse the inequality sign
Note: whatever you do to the left side has to be done for the right side too.
The function means that the variable "y" (dependent variable) depends on x(inependent variable), in the following way: .
When , , when , then .
The intercept of the function (the value that makes y=0) will be for x=1, and the slope (which is the coefficient that join x, is (-1). Using this information, you can obtain the graph for this function.