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Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c rise = 3 y = 3x - 4 run = 1 The gradient is defined as the rise/run y intercept = -4

Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c rise = 2 run = 1 y = 2x + 3 y intercept = 3 The gradient is defined as the rise/run

Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c y = ½x + 1 rise = 1 run = 2 y intercept = 1 The gradient is defined as the rise/run

Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c The gradient is defined as the rise/run rise = 1 run = 3 y intercept = -5

Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c rise = 3 run = 4 y intercept = 2 The gradient is defined as the rise/run

Straight Line Graphs (y = mx + c) 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c y intercept = 3 rise = 4 run = 5 The gradient is defined as the rise/run

Determine the equations of the following lines 1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Determine the equations of the following lines y = 2x + 3 y = 3x – 5 y = -x + 6 Y = ½x –2 Y = - 4x –9 y = ¾x