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Question

What can you say about the graph y=x212x+40?
 


Your Answer
A
Intersects x – axis at 1 point
Your Answer
B
Intersects x – axis at 2 points
Your Answer
C
Intersects y – axis at 3 points
Correct Answer
D
Does not intersect x-axis at any point

Solution

The correct option is D Does not intersect x-axis at any point
Discriminant of x212x+40=0 is negative. Thus graph of y=x212x+40 will not intersect x­ axis at any point.
 

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