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The gradient of the line l on the graph is:
If C is directly proportional to D, and C = 8 when D = 5 , find the value of C when D = 12.
8=5k
k=8/5
C=8/5×12
C=19 1/5
Sally made two errors in her solution to the following equation:
Which two lines do not follow correctly from the previous line?
Make r the subject of the formula h = mr – c
h=mr-c
h+c=mr
r=(h+c)/m
The point (2, 20) lies on the graph of y=k/x , as shown below.
The value of k is:
20=k/2
k=40