Distance from (-2,3) to (-1,1)

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SUMMARY

The distance from the point (-2,3) to the center of the circle defined by the equation x² + 2x + y² - 2y - 3 = 0 is calculated using the distance formula. The center of the circle is confirmed to be at the coordinates (-1,1). The distance is computed as √((-1+2)² + (1-3)²), resulting in a definitive distance of √5. Additionally, it is confirmed that the point (-2,3) is not on the circle.

PREREQUISITES
  • Understanding of the distance formula in a Cartesian coordinate system
  • Knowledge of circle equations in standard form
  • Ability to complete the square for quadratic equations
  • Familiarity with basic algebraic manipulation
NEXT STEPS
  • Study the derivation of the distance formula in coordinate geometry
  • Learn how to convert general circle equations to standard form
  • Explore the concept of points lying on a circle
  • Investigate the properties of circles and their centers in analytic geometry
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Students studying geometry, mathematics educators, and anyone needing to understand the relationship between points and circles in a coordinate plane.

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Homework Statement



Find the distance from the point (-2,3) to the centre of the circle x^2 + 2x + y^2 - 2y - 3 = 0


Homework Equations





The Attempt at a Solution



The circle, I calculated that the center point is (-1,1) is that correct?

Then, I just input it into the distance formula: √(-1+2)^2 + (1 - 3)^2

?
 
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nukeman said:

Homework Statement



Find the distance from the point (-2,3) to the centre of the circle x^2 + 2x + y^2 - 2y - 3 = 0

Homework Equations



The Attempt at a Solution



The circle, I calculated that the center point is (-1,1) is that correct?

Then, I just input it into the distance formula: √((-1+2)^2 + (1 - 3)^2 )

?
What's you question?

Is the point, (-2,3), on the circle? ... just asking?
 


nukeman said:

Homework Statement



Find the distance from the point (-2,3) to the centre of the circle x^2 + 2x + y^2 - 2y - 3 = 0


Homework Equations





The Attempt at a Solution



The circle, I calculated that the center point is (-1,1) is that correct?

Then, I just input it into the distance formula: √(-1+2)^2 + (1 - 3)^2

?
Yes, to both questions.
 

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