Write the standard form of the equation and the general form of the equation of the circle with radius \( r \) and center \( (h, k) \). Then graph the circle. \( r=5 ; \quad(h, k)=(-4,-3) \) The standard form of the equation of this circle is
Upstudy AI Solution
Answer
Solution
Answered by UpStudy AI and reviewed by a Professional Tutor


Extra Insights
The standard form of the equation of a circle with radius \( r \) and center \( (h, k) \) is given by the formula: \[ (x - h)^2 + (y - k)^2 = r^2 \] For your circle, substituting \( r = 5 \) and \( (h, k) = (-4, -3) \) gives: \[ (x + 4)^2 + (y + 3)^2 = 25 \] The general form of the equation can be obtained by expanding the standard form. Expanding \( (x + 4)^2 + (y + 3)^2 = 25 \) results in: \[ x^2 + 8x + 16 + y^2 + 6y + 9 = 25 \] Simplifying this gives: \[ x^2 + y^2 + 8x + 6y = 0 \] Now, when you graph this circle, you'll place the center at the point (-4, -3) and draw a circle that extends 5 units in all directions from that center, creating a lovely round shape on the coordinate plane!