Final answer:
To find the value of k in the equation y = kx, plug the given values of y and x into the equation and solve for k. The value of k is 5.
Step-by-step explanation:
To find the value of k in the equation y = kx, we can use the given information: y = 25 when x = 5. Plug these values into the equation and solve for k:
y = kx
25 = k(5)
25 = 5k
k = 25/5 = 5
Therefore, the value of k is 5.