What I Have Learned About Grade 9 Inequalities
What is an inequalities?
Inequalities can mean a lot of things due to what the symbols mean. Some of the symbols mean less than, equal to or even more than/ equal to! Inequalities don’t have equal signs they only have their own signs. some inequalities actually don’t equal to each other and that’s when you do the equal sign with a line in the middle
What does the symbols mean?
there are a lot of meaning behind each symbol and what they mean and how to make sense of it. Some people think of it as the PAC man symbol. So, if the PAC man symbol is open to the number than it is smaller because its eating the number so becomes small. But if the PAC man symbol is facing where the point is then the number is bigger because its not eating it. this is what i mean about the *eating it* and *pointing it*
How to solve – Divide by a negative?
if you are solving by a negative number there is always this one step you will have to take. And it is just simply flipping the symbol the other way of where it was already at. You do everything the same when you divide by a negative its just at the end when your dividing you would have to flip EVERYTHING over! its literally flipping everything over.
Graphing Inequalities ————-3———-
There are two main points when you are graphing Inequalities. there is an open whole and also there is a closed whole it is pretty simple to tell which is which when you get the hang of it. And you would put it where ever it says to. If it says 3 is less than x, you would put three on the number line and then figure out if its on the right side or the left (left side is smaller than the right side).
How to check solutions
when your done solving the inequalities, to check if its right you would have to actually do the equation and put the number you solved for *x* or any variable (mostly its x). So, you would input the x with the number for example 7 so you would input the number 7 with brackets (7) then solve both sides and they should be equal to each other!