Indica si cada ecuación representa una circunferen- cia, una recta o una parábola. a. \( x^{2}-y^{2}-8 x-8 y-15=0 \) b. \( (y+3)^{2}=-24(x-7) \) c. \( (x-1)^{2}=9-(y-2)^{2} \) d. \( x-y-1=0 \) e. \( y^{2}-8 x=0 \) f. \( x^{2}=4-y^{2} \)

Defina o que é o raio de um círculo e como ele se relaciona com o diâmetro.

a. Points \( A \) and \( B \) are 1.5 units apart. (Type an integer, fraction, or mixed number.) b. Give the coordinates of one point that is 4 units from point \( C \) in the x-direction. (Type an ordered pair.)

We desea eartriif una cala sin lapa y que almacene dial mayor volumen. para ello se dispone de una lamina d carton con las siguientes medidas. \[ 10 \mathrm{~cm} \times 9 \mathrm{~cm} \]

The coordinates of triangle ABC are \( \mathrm{A}\left(-4 \frac{1}{2},-2 \frac{1}{2}\right), \mathrm{B}\left(-4 \frac{1}{2},-1\right) \), and \( \mathrm{C}(6,-1) \). a. What is the distance between points A and B ? b. Give the coordinates for two points that are 4 units from point C . a. Points A and B are \( \square \) units apart. (Type an integer, fraction, or mixed number.)

The coordinates of triangle \( A B C \) are \( A\left(-4 \frac{1}{2},-2 \frac{1}{2}\right), B\left(-4 \frac{1}{2},-1\right) \), and \( C(6,-1) \) a. What is the distance between points A and \( B \) ? b. Give the coordinates for two points that are 4 units from point \( C \).