12/16/2023 0 Comments Grpahing equation systemsThis would give us ?y? or ?-y? in both equations, which will cause the ?y?-terms to cancel when we add or subtract. This would give us ?x? or ?-x? in both equations, which will cause the ?x?-terms to cancel when we add or subtract.ĭivide the first equation by ?3?. For example, if the y-intercept was 2 graph the number 2 on the y axis of the graph. Next graph the y-intercept, take the number that is the y-intercept, and graph that number on the graph. For example, if the slope was 5, the slope would be 5/1. This would give us ?3y? or ?-3y? in both equations, which will cause the ?y?-terms to cancel when we add or subtract.ĭivide the second equation by ?2?. To graph a line from a slope-intercept equation, take the value of the slope and put it over 1. Multiply the second equation by ?3? or ?-3?. This would give us ?2x? or ?-2x? in both equations, which will cause the ?x?-terms to cancel when we add or subtract. Multiply the first equation by ?-2? or ?2?. So we need to be able to add the equations, or subtract one from the other, and in doing so cancel either the ?x?-terms or the ?y?-terms.Īny of the following options would be a useful first step: ![]() When we use elimination to solve a system, it means that we’re going to get rid of (eliminate) one of the variables. ![]() ![]() To solve the system by elimination, what would be a useful first step?
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