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Question 153891: totally lost, I have to sketch a graph and find the vertex, x and y intercept, domain, range and the transformation I'm able to graph on calculator but that's no help to me
a)
b)
c)
Thanks any help is appreciated
Answer by Edwin McCravy(20060) (Show Source):
You can put this solution on YOUR website! totally lost, I have to sketch a graph and find the vertex, x and y intercept, domain, range and the transformation I'm able to graph on calculator but that's no help to me
a)
b)
c)
Thanks any help is appreciated
I'll do all but the last, which requires shading.
Rule:
To find the vertex of the graph of
set and solve for x. That's the x-value of the
vertex. The y-value of the vertex is just D.
Domain is always domain ( ,
Range: (D, ) if graph opens upward
or
Range: ( ),D) if graph opens downward
transformation:
units Right if is negative
units Left if is positive
units Up if is positive.
units Down if is negative
-----------------------
Consider that as:
Set
That is the x value of the vertex.
The y-value is 0.
So the vertex is (0,0)
Get two more points one on each side of the
vertex.
Substitute
So 1 point is (1,0)
Substitute
So another point is (-1,1)
Plot those three points
Now draw a v-shaped graph with the vertex at the bottom:
domain: ( , )
range: ( , )
No transformation.
-------------------
Set
That is the x value of the vertex.
The y-value is 4.
So the vertex is ( , )
Get two more points one on each side of the
vertex.
Substitute
So 1 point is (0,7)
Substitute
So another point is (3,7)
Plot those three points
Now draw a v-shaped graph with the vertex at the bottom:
domain: ( , )
range: ( , )
transformation:
units Right because is negative
units Up because is positive.
---------------
First draw as above, then shade all
the area below the v-shaped graph.
Edwin
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