SOLUTION: I am having a very difficult time with quadratic equations. Can someone please help me with this question? It is greatly appreciated! What does the final term in the quadratic e

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: I am having a very difficult time with quadratic equations. Can someone please help me with this question? It is greatly appreciated! What does the final term in the quadratic e      Log On


   



Question 632408: I am having a very difficult time with quadratic equations. Can someone please help me with this question? It is greatly appreciated!
What does the final term in the quadratic equation x2 + 2x - 7 mean, and how do we find this term on the graph?

Found 2 solutions by solver91311, josmiceli:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


It is the value of the function when the independent variable takes on the value 0. It is the -coordinate of the -intercept, i.e. the point where the graph of the function crosses the -axis.

John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism


Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+y+=+x%5E2+%2B+2x+-+7+
You need to get a big picture of it.
What you've got is
y = ( some terms with x in them ) - 7
---------------------------------
The +-7+ just pulls +y+ negative
by the same amount, -7
for each value of x that you plug into
the right side.
------------
I'll do 3 plots:
+y+=+x%5E2+%2B+2x+
+y+=+x%5E2+%2B+2x+-+7+
+y+=+-7+
---------

See how the straight line +y+=+-7+ pulls down +y+=+x%5E2+%2B+2x+?