After making a chart in Excel and obtaining the equation " Y= 3E+07x+2445.3 " Now i need to calculate the modulus of elasticity. I know that the slope of the equation gives the modulus of elasticity. but I have no clue how to even begin solving the equation Y= 3E+07x+2445.3 I do know E=stress/strain.... any hint or advice would help. (do i just find the slope of elastic portion)? is that the answer?