it's me, christian narciso !
so .. guess what? it's VALENTINES DAY ! well in our case it was valentines day yesterday, unless you are reading this today, then it wouldn't be yesterday .. what? .. LOL, so irrelevant from the topic .. HAHA oh well.
anyways, today in pre-cal class, we continued with graphing quadratic functions. today's lesson was about sketching/plotting out the h variable from the formula: f(x) = (x-h2)^2 (note: ^2 = power of 2) i really don't know how to explain this, but in my head it was basically the horizontal movement of the quadratic function, moving the x-axis to either the left or right of the graph according to the equation that is given. the tip in proceeding this is changing the values within the brackets of an equation to its opposite.
so for example this equation:
would actually be: 
due to the formula: 
where we have to make (x - h)^2 and not (x+h)^2. since we are changing the H value so that we are moving the quadratic function horizontally and not vertically. i myself am having frustrations with this, but the only way to learn this is to read over your notes ! i don't know if this will help but, how i think of it is that:
- if the equation is in a closed bracket the graph will move horizontally and you must change the values inside the brackets.
- and if it's not in brackets the graph will move vertically.
Mr. P also showed us the longer way of doing this without doing the table of values for x & y where we graph out the equation then move the graph sketch accordingly. i found this a little too complicated for me, but like what he told me, do what feels like it's comfortable. meaning simple and easy to understand for yourself. hope i this makes sense and i didn't fry or confuse anyone's brains ! (;
signing off,
-christiannarciso .
ps. we have homework guys ! the worksheet he gave out last week on friday, titled "Graphing Quadractic Functions" which is due tomorrow ! get it done !
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