Question 353223
 An automobile's distance is given by d=30t (t in seconds, d in metres)
a) graph the function using a suitable scale and any means at your disposal
b)draw the secants from the point (2,60) to each of the points in the graph ending at t=3, 2.5, 2.1, 1.01.
c)determine the equations of eacch of the secants above
d)explain your results form part c. 
====================
The equation you posted is a line.
Lines do not have secants.
---
Note: A secant is a line segment joining two points of a CURVE.

---
Please check the statement of your problem.
Cheers,
Stan H.