#1**+3 **

Perpendicular lines have negative reciprocal slopes.....so....the slope of the line we want will be -7/2

So we have

y = m ( x - x1) + y1 where m is the slope and (x1, y1) = ( 2,4)

y = (-7/2) ( x - 2) + 4 simplify

y = (-7/2)x + 7 + 4

y = (-7/2)x + 11 [ in slope-intercept form ]

CPhill Jun 28, 2018