What is the value of $a$?

Source Texts

Text

Circle center

(3, 7)

. Line

t

is tangent at

(a, - 4)

. Slope of line

t

5/4

. [cite: 2244, 2245, 2246, 2247]

What is the value of

a

-43/4

-29/5

59/5

43/4