TESThttps://student.masteryconnect.com/?iv=Alxn09azl_cyvZFNImj3pQ&tok=2HnpaghCCDpi_smhDxaUY_5r_rqPkPaA3n_nZbF4QeQC2G59l3eC-D
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y = - x +
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
y = 4x + 5 is in this form with slope m - 4
Given the slope of a line m, then the slope () of a line perpendicular to it is
= - (1 / m ) = -
y = - x + c is the partial equation of the perpendicular line
to find c, substitute ( 2, 7 ) into the partial equation
7 = - + c ⇒ c =
y = - x +
← equation of perp. line