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The variables x and y are connected by the equation + 2y = 4. Some values of x and the corresponding values of y are given in the table (a) Find the value of p and ola, (b) On a sheet of graph paper, using a scale of 1 em to represent I unit on the x-axis and 2 em to represent 1 unit on the y-axis, draw the graph of -x + 2y = 4 for -55x55. (c) The point (r, 0.5) lies on the graph in (h), Find the value ofr. (d) (i) On the same axes in (h), draw the graph of x = 3 (ii) State the y coordinate of the point on the graph of -x + 2y=4 that has an x-coordinate of 3 |
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