​(a) Plot the points (0, 5), (2, 3), (4, 1) and (5, 0). Draw a straight line through them.
(b) Write down the coordinates of two other points on the line.


(c) The relationship between the x- and y- coordinates can be written as x + y = _______. What is the missing number?

Hi, 
Plotting these points we will gets a straight line 


Other two points are E6,-1 and F7,-2Here line is cutting x -axis at D5,0and y axis at A0,5So rquation of line passing through two points x1,y1 and x2,y2 is given as y-y1=y2-y1x2-x1x-x1So here equation of ADis y-5 = 0-55-0x-0y-5 = -xx+y= 5 

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