The user-friendly version of this content is available here.

The following content is copyright (c) 2009-2013 by Goods of the Mind, LLC.

This problem trains for: SAT-I, AMC-8, GMAT, AMC-10.

Find the the y-intercept of the linear function that transforms the arithmetic sequence (progression):

equation

into the arithmetic sequence (progression):

equation

Start with a generic expression for the function:

equation

and use two convenient points:

equation

equation

equation

equation