SOLUTION: Find the points of intersection of the graphs of x^2+y^2=49 and y=2x-2 Thanks!

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Question 633737: Find the points of intersection of the graphs of x^2+y^2=49 and y=2x-2
Thanks!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Find the points of intersection of the graphs:

y=2x-2 

x^2+y^2=49

x^2 + (2x-2)^2 = 49

 5x^2 - 8x -45 = 0

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%288+%2B-+sqrt%28+964%29%29%2F%2810%29+

  x = 3.9  or x = -2.3

 points of intersection of the graphs: (3.9, 5.8)  and (-2.3, - 6.6)