Circle a is located at (6, 5) and has a radius of 4 units. what is the equation of a line that is tangent to circle a from point c (2, 8)?
a. x=2
b. y= -0.75x+9.5
c. y= 1.33x+1.66

answer:

  a.   x = 2

step-by-step explanation:

a graph can you answer this question.

the difference of x-coordinates of a and c is -4 units, so a vertical line through a will be tangent to the circle. (choice a).

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the difference of y-coordinates of a and c is 3 units, so the slope of the line from a to c is -3/4. that is, choice b describes a line through c that goes through the center of the circle. it cannot be tangent.

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the line y = 1.33x + 1.66 does not go through point c. it cannot be the required tangent, either.

answer: it is 1: 47 pm

6 on both sides and twelve on the top and the bottom

step-by-step explanation: