Find the equation of the line and express in slope intercept form for a) through (1/2, -2/3) and (3/2, 1/3)
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Gradient = Change in y / change in x
= (1/3 - - 2/3)/ 3/2 - 1/2) = 1/1 = 1
The equation is also given by
1 = (y - -2/3)/ ( x- 1/2)
1 = (y + 2/3)/(x -1/2)
(x-1/2) =(y + 2/3)
x-1/2 -2/3 = y
x - 7/5 = y
x = y+7/6
y = x -7/6
NB. An equation is in slope intercept form if it written in the form y = mx + c, where m is the gradient and c is the y intercept
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