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 \( (x+4)^{2}+(y+3)^{2}=25 \). The general form of the equation of this circle is (Simplify your answer.)
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The Deep Dive
To convert the standard form \( (x + 4)^{2} + (y + 3)^{2} = 25 \) into general form, you'll want to expand the equation: 1. Expand each square: \( (x + 4)^{2} = x^{2} + 8x + 16 \) \( (y + 3)^{2} = y^{2} + 6y + 9 \) 2. Combine them: \( x^{2} + 8x + 16 + y^{2} + 6y + 9 = 25 \) 3. Move \( 25 \) to the left side: \( x^{2} + 8x + y^{2} + 6y + 16 + 9 - 25 = 0 \) 4. Simplify: \( x^{2} + 8x + y^{2} + 6y = 0 \) Thus, the general form of the equation of the circle is: \( x^{2} + 8x + y^{2} + 6y = 0 \) --- Drawing the circle based on the equation: To graph this circle centered at \((-4, -3)\) with a radius of \(5\), start by plotting the center. From the center, move \(5\) units in all four cardinal directions: up, down, left, and right. Connect these points in a round shape to visualize the complete circle!