Write the standard equation of a circle with center (−9, −4) and radius square root of 5 .

(x – 4)2 + (y – 9)2 = 5

(x – 9)2 + (y – 4)2 = 5

(x + 4)2 + (y + 9)2 = 5

(x + 9)2 + (y + 4)2 = 5

The answer is the 4th, . When it comes to circle and plugging it into an equation, you flip the signs (I know, the trickery) so if it is positive 9 it would be negative 9 in the equation.

step-by-step explanation:

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answer: the correct option is d.

explanation:

it is given that the triangle j'k'l' shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation.

from the given graph it is noticed that k(4,8) and k'(2,4). let origin is defined by o and scale factor is defined by k, then

    (1)

distance formula,

put these values in equation (1).

therefore scale factor is     and option d is correct.