Pre-Cal activity:

22 ANALYTIC GEOMETRY EXERCISE 1.2 A. Write the equation of the circle in standard form given the center C(h, k) and radius r. 1. C(3, -2) and r = 4 I'llW as awon't vitugog soilobd testsnow to gestbillet love you Answer: int. siff to dousegnos 14W salt assivres noidw aonmy of to agam safe Answer: 3. C(-2, -4) and r = 2 Answer: 4. C(-10, 2) and r = 5 doAnswer: alnobule adi vidil bill mod yours anotein & I ai sgefol insbute sit sgaia Tutun 5. C(4, 8) and r = 1 Answer: B. Given the equation of the circle in standard form, determine its center and radius. in ofl mont word ow moleve 1. (x - 1)2 + ( y + 5)2 = 16 Answer: center _ radius -due ardi to goneoof pitt fed 2. (x - 2)2 + ( 1 - 1)2 = 4 Renne but nousupe so Answer: center radius 3. (x + 1)2 + (y + 1)2 =100 Answer: center radius 4. (x - 8)2 + (v-15)2 = 12 I posbabe sill To goitesol 9 0 eurIT notlaups ant donahue Ining sill Answer: center radius 5. (x + 2 ) + ( 1-2 )- 25 Answer: center radiusANALYTIC GEOMETRY 24 S. *+y-20x- 2y+ 52= 0 neartol bialaare the anoukous guercilot and say center radius Answer: equation. 4. x2 + 2 + 16x - 10y + 81 = 0 Defer Answer: equation ing its center and center radius 5 .CIRCLE 23 C. Write the following equations in standard form and determine the center and radius. Then sketch each graph. 1. x2 + 12 - 2x - 15 = 0 Answer: equation center radius 0- 18401 10Itz 2. x2 + 12 + 6x -4y + 9=0 Answer: equation center radiusCIRCLE 25 5. x2 + 12 - 14x - 6y + 48= 0baco surwallet andrenigtellat storingdi to mol amps pill bald a Answer: equation . center _ radius D. Find the equation of the circle satisfying the following conditions: 1. center at (-3, -6) and tangent to the y-axis Answer: 2. center at (1, 5) and tangent to the x-axis Answer: 3. ends of a diameter at (5, 3) and (-1, 7) Answer: 4. radius 4 units, tangent to the x-axis, and abscissa of center is -5 Answer: 5.' center at the intersection of the lines 2x + y = 4 and x -y = 5 and radius 8 units