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Can every first order linear equation that is in general form be rewritten in standard form?(Differential Equation)? What is the difference in energies of two limiting emission spectrum lines of the Helium+ ion.? Find an equation for a line that passes through the two points of (2,12) and 3,19)? When I partition a line segment in geometry, how do i find the "k"? Trying to figure the subset of 2/3
two thirds in math?