Write this in point- slope form
y=3x-15

Point-slope form is
y - y1 = m(x - x1)
In this form, the given equation can be written as
y - 0 = 3(x - 5)
or simply
y = 3(x - 5)

The line passes through point (5,0) and has slope of 3.
I think this is what you're looking for.

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