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Equation of a line in slope-intercept form is
where m is the slope and c is the intercept of the line on y-axis
Also, the equation of a line in point-slope form is
Where is the point and m is the slope.
Since the slope of a line passing through two points can be found out using
Therefore, we can find out the equation of the line using point-slope form.
Therefore, Helena is correct since we cannot find out the intercept c and hence Samuel's method is incorrect,
Sagot :
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