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Algebra 1 Section 7.1 Solve systems of linear equations by graphing Recall: linear equation in 2 variables ax + by = c The solutions to a system of linear equations are all ordered pairs that are solutions to each equation. Is the ordered pair ( 2,3) a solution to the system: 5x – 2y = 4 3x + 2y = 12 The solution to a system of equations are the point(s)of intersection of the graphs. To solve a system of linear equations by graphing 1. Graph each equation 2. Find their intersection Solve the system -x + 2y = 6 x + 4y = 24 Solve x+y=3 -2x + y = -6 Solve using a graphics calculator ¾x–¼y=-½ ¼ x – ¾ y = 3/2 Page 400 ex 3 • • Science Club: Currently 400 daily visits and increasing at a rate of 25 per month Math Club: Currently 200 daily visits and increasing at a rate of 50 per month assignment • Page 401 • Problems 12 – 36 even, 37,38,39