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2. 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

3. 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

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
y = ½x + 1
rise = 1
run = 2
y intercept = 1
The gradient is defined as the rise/run

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
The gradient is defined as the rise/run
rise = 1
run = 3
y intercept = -5

6. 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

7. 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

8. Determine the equations of the following lines1 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