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Q1)
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Find the gradient of the line through the following
pairs of points:
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a)
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A = ( 2, 4 )
B = ( 6 , 10 )
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2
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4
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6
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10
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b)
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A = ( –2, 4 )
B = ( 6 , 10 )
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-2
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4
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6
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10
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c)
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A = ( –2, –4 )
B = ( 6 , 10 )
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-2
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-4
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6
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10
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d)
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A = ( –2, 4 )
B = ( –6 , 10 )
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-2
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4
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-6
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10
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e)
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A = ( 2, 4 )
B = ( 6 , –10 )
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2
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4
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6
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-10
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f)
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A = ( 2, –4 )
B = ( 6 , –10 )
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2
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-4
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6
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-10
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g)
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A = ( –1, 10 )
B = ( 4 , –10 )
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-1
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10
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4
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-10
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h)
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A = ( 4, 2 )
B = ( 6 , – 8)
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4
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2
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6
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-8
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i)
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A = ( –4, –8 )
B = ( 4 , 8 )
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-4
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-8
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4
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8
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j)
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A = ( 3, 1 )
B = ( 12 , 37 )
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3
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1
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12
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37
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k)
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A = ( –4,
20 ) B = ( 2 , –15 )
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-4
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20
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2
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-15
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Q2)
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A line has gradient 3 and passes through the point ( 4, 8 )
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3
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4
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8
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c
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Find another point which
lies on the line:
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x =
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y =
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A line has gradient –3 and passes through the point ( –4,
–8 )
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-3
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-4
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-8
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c
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Find another point which
lies on the line:
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x =
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y =
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Q3)
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A line has gradient 4 and passes through the points ( 2,
3 ) and ( 6, y ).
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4
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2
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3
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6
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y =
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A line has gradient -6 and passes through the points ( x,
3 ) and ( 6, 12 ).
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-6
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3
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6
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12
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x =
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Q4)
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The line joining the points A =
( 0, 2 ) and B = ( 10 ,
7 ) is shown in
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the plot below.
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Gradient of line AB =
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0
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2
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10
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7
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Next, choose two new points, C and D so
that the lines AB and CD meet
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at right angles.
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C
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x
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y
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D
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x
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y
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Check:
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Gradient of line CD =
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