00:01
In order to graph y equals 1/5 x minus two.
00:04
I have to pick values for x two right here in my x y table, and i usually like to pick numbers for x that i know that when i plug them in or substitute them into the equation, i will get whole numbers.
00:19
And i like to do that because then there are a lot easier to plot on a graph.
00:23
So and whenever i have a fraction, it's important to always look at the denominator because that gives you a great idea as to what types of numbers to choose.
00:33
For instance, with five as a denominator, i could pick a negative five.
00:37
I could pick up positive five, and then i usually always pick zero.
00:42
So the reason i picked that negative five and that positive five is because when i multiply those values to 1/5 i will get either a positive one or a negative one.
00:52
So if we go ahead and solve that when x equals negative five, why is equal to that 1/5 times negative five becomes negative, 5/5, which can be simplified to negative one, and then it's a lot easier for your brain to work with the whole numbers.
01:14
So then why equals negative? three.
01:18
So negative five comma three negative three is a lot easier to plot, then dealing with fractions or decimals when i choose zero...