1. The problem statement, all variables and given/known data For small changes in temperature, the formula for the expansion of a metal rod under a change of temperature is: L-Lo = aLo(t - to) L= length at temp. t Lo= initial length at temp. to a= constant that depends on metal A) express L as a linear function of t. Find the slope and y intercept(hint: treat the other quantities as constants.) 2. Relevant equations Y=mx+b Y-Yo=m(x-xo) 3. The attempt at a solution Solution 1?: the slope is aLo as stated by the equation, and the y intercept is Lo... Distribute L= aLot-aLoto+Lo L=Lo(at-ato+1) Doesnt work, still has variable to, lo, etc. Solution 2?: assume a=1 L=Lo(t-to+1) Slope= Lo? Y intercept also lo? Solution 3: Lo, a and to=0 L=0... doesnt work Or, pretend all constants=1 L-1=1(t-1) L=t Seems too specific. I don't really know from which other angle to tackle this problem, I would appreciate some ideas, although I can imagine the answer should be obvious to me. I don't know how to turn this fully into y=mx+b. Thanks in advance.