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Topic review (newest first)

bobbym
2013-08-25 06:51:32

Hi;

Got the answer yet or how far along are you?

mathstudent2000
2013-08-24 13:46:33

ok, thanks, i think the easiest is the distance formula one

bobbym
2013-08-24 13:44:47

One way would be to substitute the linear equation into the equation of the circle and solve for the points of intersection. Then to use the distance formula. Or you can use geogebra.

mathstudent2000
2013-08-24 13:43:10

Thanks i now know how to do 1 and 3 but i still don't really get no. 2, can you please explain how to do it

bobbym
2013-08-22 10:53:03

Hi;





mathstudent2000
2013-08-22 10:42:49

1. Points A and B are in the first quadrant, and O = (0,0) is the origin. (A point is in the first quadrant if both coordinates are positive.) If the slope of \overline{OA} is 1 and the slope of \overline{OB} is 7, and OA = OB, then compute the slope of \overline{AB}.

2. The line y = (3x + 7)/4 intersects the circle x^2 + y^2 = 25 at A and B. Find the length of chord \overline{AB}.

3. The lines y = \frac{5}{12} x and y = \frac{4}{3} x are drawn in the coordinate plane. Find the slope of the line that bisects these lines.

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