You have the correct pairings
(x,y) is any point on the line
m is the slope
(x1,y1) is the given point on the line
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For example, if we said that the slope was m = 5 and the given point was (x1,y1) = (7,9)
Then,
y - y1 = m(x - x1)
y - 9 = 5(x - 7)
is the point slope form