SOLUTION: Can you help me figure out this problem please? Find the distance between the points of intersection of the graphs y = x^2 + 5 and y = 21 Thank you! -Tiffany

Question 780806: Can you help me figure out this problem please?

Find the distance between the points of intersection of the graphs
y = x^2 + 5 and y = 21
Thank you!
-Tiffany
Answer by fcabanski(1391) (Show Source): You can put this solution on YOUR website!
The first graph is a parabola. What is its x value when y = 21? That's where it intersects the line y=21.

21 = x^2 +5

16 = x^2 so x = + or - 4.

The points of intersection are (-4, 21) and (4, 21)

The distance between the two points is 8 units.

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