This week we review the final exam.

It’s about GCF(greatest common factor), LCM(least common muitples), slope, Pythagorean Theorem, and relations.

First of all, GCF. For example, 90 and 225, 90=2*3*3*5. 225=3*3*5*5. GCF=3*3*5, GCF=45.

LCM. For example, 30 and 36. 30=2*3*5, 36=2*2*3*3. LCM=2*2*3*3*5, LCM=180.

The next one is pythagoren Theorem. 

Hypontenuse (longest side) = a2+b2=c2.

We have three ratio: Sine ratio=o/h, Cos ratio=a/h, Tan=o/a. 

And then we learned the relation part.

The cost of jujubes is related to the weight.

Cost=dependent, y, output, range, Weight=independent, x, input, domain. 

And other important thing is x-intercept=(x,0). y-intercept=(0,y).

Domain is x scope, Range is y scope.