SOLUTION: I need help with a graphing question:
I can't paste the graph, but the x intercepts are approximately -1 and 3. The Y intercept is -2.
I'm asked to find the equation that rep
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Question 1038933: I need help with a graphing question:
I can't paste the graph, but the x intercepts are approximately -1 and 3. The Y intercept is -2.
I'm asked to find the equation that represents the graph and I'm given the following equations:
A. y = x^2 2x 2
B. y = x^2 + 2x 2
C. y = 2x^2 3x 2
D. y = 2x^2 + x 2
I'm also asked to state the range, the vertex and state the interval on which the function is decreasing.
I really appreciate any help you can offer, thank you!
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Each of the 4 given functions has a 
-intercept of )
. You can tell this by the fact that the constant term is -2. The graph of any quadratic of the form 
has a -intercept of )
.
The two functions with negative lead coefficients, namely answers B and D, both open downward and have vertices below the 
-axis. Therefore, neither one has any -intercepts.
As for the other two answers, it depends on what you mean by 'approximately' when you describe the -intercepts. Answer A has intercepts of 
and 
. Answer C has intercepts of 
and 
. From what you posted, I can't tell which is the correct answer. Perhaps you can get it from the figure below.
.jpg)
John
My calculator said it, I believe it, that settles it
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