What is the j?
30/j = 26/39

Unit Imaginary Number.

Step-by-step explanation:

The "unit" Imaginary Number (the equivalent of 1 for Real Numbers) is √(−1) (the square root of minus one). In mathematics we use i (for imaginary) but in electronics they use j (because "i" already means current, and the next letter after i is j).

i pretty sure it is

i believe that the answer is

b. y-1=-2(x-4)

hope this !