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Tuesday, February 12, 2013

9.1 Homework book 5, 6, 7

 5. Complete the sentences to describe the graph below.

a) The height of a one-storey building is __3__m, a __2__-storey building is 6m high, a three-storey building is __9__ m,...
b) The points appear to lie in a _straight line_. The line shows a _linear_ relation.
c) The graph shows that to move from one point to the next you go _1_ unit horizontally, and _3_ units vertically.
d) Complete the table of values for this graph
          1     2     3     4     5     10
          3     6     9     12   15   30
6, The graph sows the cost of gasoline based on the volume of gas.

a) Does the graph show a linear relation? Explain
The pattern and points are in a straight that makes it a linear relation.
b)The graph shows that for every five units horizontally, you go _7.50_ units vertically.
c)Complete the table of values from the graph.
Volume(L)   Cost($)
     5              7.50
   10              15.00
   15              22.50
   20              30.00
   25              37.50
  30               45.00
d)Would it be reasonable to include a point for 7 L? Explain
Yes. Gasoline is solid when you measure it's volume.
e)What is the cost of gasoline per litre?
f) If the graph continued, what would be the cost of

25 L?-$37.50

30 L? -$45.00
7.The graph shows the maximum number of customers based on the number of tables in the restaurant.

a)Title the graph
Number of customers per table.
b)Describe the patterns on the graph. Does the graph show a linear relation.
The pattern and points are in a straight line. 1 unit horizontally 4 units vertically. Linear relation.
c)Complete the table of values for the graph.
1  2  3  4  5  6
4  8 12 16 20 24

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