Use a graphing utility with the standard viewing window and to graph the function. Choose the correct graph below.
A)
B)
C)
D)
E)

Question

Use a graphing utility with the standard viewing window  and  to graph the function. Choose the correct graph below. ​  ​
A) ​ ​ 
B) ​ ​ 
C) ​ ​ 
D) ​ ​ 
E) ​ ​

Quizplus · Accepted Answer

Looking at the given function, we can see that it is a quadratic function in standard form with a negative leading coefficient, indicating that it opens downwards. Therefore, we expect to see a parabola that is concave downwards.
From the given viewing window, we can see that the x-values range from -10 to 10, and the y-values range from -5 to 5. 
Using a graphing calculator, we can graph the function and get a parabola that matches the given criteria. 
Option A shows a parabola that is concave upwards, so it cannot be the correct choice. 
Option B shows a perfect match, with a parabola that is concave downwards and fits within the given viewing window. 
Option C shows a parabola that is concave upwards and is also too narrow for the given viewing window. 
Option D shows a parabola that is concave downwards, but it is too wide for the given viewing window. 
Option E shows a parabola that is concave upwards and is also too narrow for the given viewing window.

Use a Graphing Utility with the Standard Viewing Window