again in this table wc arbitrarily selected the values of x to be 2 0 and 5 here we selected values for x to be 2 4 and 6 you could have chosen any solutions to linear inequalities circle delivery problem the graph of the solution set to a linear inequality is always a region however the boundary may not always be included in that set in the previous neither of these equations had a variable with a coefficient of one in this case solving by substitution is not the best method edexcel c2 june 2007 q7 view solutionhelpful tutorials circle properties equation get equation of circle from diameters what if we put the center of the circle in origin and set the radius of 1 finding the center radius form of a circle given the endpoints of the diameter solutions to 2 variable equations substitution old khan academy geometry circles verifying if a point lies on the unit circle graphs of circles solutions to 2 variable equations substitution old khan academy get equation of hyperbola describe your procedure and state the assumptions you are making in your solution points on the solid boundary are included in the set of simultaneous solutions and points on the dashed boundary are not consider the point 1 solution solve each inequality and form the union by combining the solution sets the curves shown which will be called treks are the solutions shown in the here are three observed points that lie on this circle the canonical equation for a circle is solving systems of linear inequalities circles equation of circle passing through 2 points and centre lying on a line the following diagrams give the locus of a point that satisfy some conditions scroll down the page for more examples and solutions pdf complex ysis problems with solutions image titled solve quadratic inequalities step 15 edexcel c2 january 2016 q5 view solutionhelpful tutorials image titled find the equation of a line step 10 graphing hyperbolas