SOLUTION: If the equation of a circle is x^2+y^2+3x-my+10=0 and the point (2,-5) lies on the circle, what is the value of m? I think it is -6???
Algebra.Com
Question 139615: If the equation of a circle is x^2+y^2+3x-my+10=0 and the point (2,-5) lies on the circle, what is the value of m? I think it is -6???
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If the equation of a circle is x^2+y^2+3x-my+10=0 and the point (2,-5) lies on the circle, what is the value of m? I think it is -6???
--------------------------------------
2^2+5^2+3*2+5m+10 = 0
4 + 25 + 6 + 5m + 10 = 0
5m = -45
m = -9
=============
Cheers,
Stan H.
RELATED QUESTIONS
If the point(3,-2) lies on the circle defined by x^2+y^2+mx-4y-3=0, what is the value of... (answered by stanbon)
Write the equation of a circle with the following characteristics: Diameter of 6 Point... (answered by josgarithmetic)
The center of a circle is the point (3, 2). If the point (8, −10) lies on this... (answered by Alan3354)
The equation (x−1)2+(y−3)2=r2 represents circle A. The point B(4, 7) lies on... (answered by josgarithmetic)
the center of a circle lies on the line x + y = 1 and passes through the origin and the... (answered by nyc_function)
Please check my answers for questions related to Unit Circle
A. Find the missing... (answered by stanbon,ewatrrr)
What point lies on the graph of the circle given by the equation: ( x - 2 )^2+(... (answered by stanbon)
If the circle with centre(0,m) has equation x^2+y^2+6y+5=0, what is the value of... (answered by stanbon)
A certain circle has an equation of x^2+y^2=25.
If the point (5, 0) is on the terminal... (answered by josgarithmetic)