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Writing Equations from Tables Mrs. Kuznia Math 8 Day 54 Objective Given a table of x and y values, we can write an equation. We do this by looking for patterns!! Example x y 0 2 1 4 2 6 3 8 4 10 We need to use y= mx+b. We need to determine 2 pieces, the m and the b. How do we get the m? Look in the y colums for a pattern. This is the m. How do we get the b? Find the 0 in the x column, and match it with the y-value. Continued x y 0 2 1 4 2 6 3 8 4 10 Example x y 0 10 1 6 2 2 3 -2 4 -6 Example x y 0 5 1 10 2 15 3 20 4 25 Example x y 2 3 3 6 4 9 5 12 6 15 Use the table to graph the appropriate line. Then, give the equation of the line. x y 0 -2 1 -4 2 -6 3 -8 4 -10 Use the table to graph the appropriate line. Then, give the equation of the line. x y 1 5 2 3 3 1 4 -1 5 -3