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x y ∆1 -2 4 1st Diff= -1 1 eqn: y=mx+c -2 0 y= -5 1 y-int= -8 2 -11 3 -14 4 xy x y -2 4 common product= -1 8 eqn: DNE DNE 0 y= a y= -8 1 x -4 2 -8/3 3 -2 4 x y y2 y1 common ratio= 1/9 -2 -1 ⅓ y=a(bx) eqn: 0 1 y= 3 1 x 9 2 y-int= 27 3 81 4 x y ∆1 x-int: ∆2 -2 8 y=a(x-e)(x-f) -1 3 remember: x-int in order left to right eqn: x-int: 0 0 y= -1 1 y-int: 0 2 2nd Diff 3 3 8 4 xy x y -12 -2 common product= -24 -1 eqn: DNE DNE 0 y= a y= 24 1 x 12 2 3 8 4 6 x y ∆1 -14 -2 1st Diff= -9 -1 eqn: y=mx+c -4 0 y= 1 1 y-int= 6 2 11 3 16 4 x y ∆1 x-int: ∆2 -2 4 y=a(x-e)(x-f) -1 0 eqn: remember: x-int in order left to right x-int: y= 0 -2 -2 1 y-int: 0 2 2nd Diff 4 3 10 4 x y y2 y1 0.08 -2 common ratio= 0.4 -1 eqn: y=a(bx) 0 2 y= 10 1 ( ) 50 2 x y-int= 250 3 1250 4 x y y2 y1 32/9 -2 common ratio= 16/3 -1 eqn: y=a(bx) 0 8 y= 1 12 ( ) 18 2 y-int= x 27 3 40.5 4 xy x y -¼ -2 common product= -½ -1 eqn: ~ 0 y= a y= ½ 1 x ¼ 2 1/6 3 4 ⅛ x y ∆1 -2 2 1st Diff= -1 2.5 eqn: y=mx+c 0 3 y= 3.5 1 y-int= 4 2 4.5 3 4 5 x y ∆1 x-int: ∆2 -2 0 y=a(x-e)(x-f) -12 -1 eqn: remember: x-int in order left to right x-int: y= -18 0 -18 1 y-int: -12 2 0 2nd Diff 3 18 4 x y y2 y1 -3 24 common ratio= -2 12 eqn: y=a(bx) y= -1 6 ( ) 3 0 1.5 x 1 y-int= 0.75 2 0.375 3 x y ∆1 x-int: -12 ∆2 -2 y=a(x-e)(x-f) eqn: -1 0 remember: x-int in order left to right x-int: y= 0 8 12 1 y-int: 12 2 2nd Diff 8 3 0 4 |