Given point is and slope(m) =
.
Because you know the slope and a point on the line,
\Use point - slope form to write an equation of the line.
Let =
and slope(m) = .
.
(Substitute
3 for
,7 for
and m =
)
Rewrite in slope - intercept form.
\ (Product of two same signs is positive)
(Apply distributive property:
)
(Cancel common terms)
(Multiply:
)
Apply subtraction property of equality: a = b then a c = b
c.
(Subtract 3 from each side)
(Apply additive inverse property:
)
(Apply additive identity property:
)
(Subtract:
)
The equation of the line is .