P is the point (1,2) and Q is the (5,3) the line through P making angles 45 degree with PQ meet the perpendicular to through Q at L and M .Find the equation of the lines PQ, LM, PL and PM. Deduce the co-ordinates of the points L and M ​

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

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Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]