ft only on their gradient. (ii) x y = â = += 0.5 ln 4 3 3 9.928. y = 20 500. M1. A1. correct expression for lny. (iii) Substitutes y and rearrange for 3x. Solve 3x. = 1.150. x = 0.127. M1. M1. A1. Page 3 of 10. Scientific Names.pdf. Scientific Names.pdf. Open. Extract. Open with. Sign In. Main menu. Displaying Scientific Names.pdf.