Find the equation of the line passing through the point 4 3
Find the equation of the line passing through the point (4, 3) that is perpendicular to the line 5x + 2y = 6.
a. y = 2/5x + 23/5
b. y = 5/2 x 3/2
c. y = 5/ 2 x + 3 /2
d. y = 2 /5 x 14/ 5
e. y = 2/ 5 x 23 /5
Solution
5x + 2y = 6 =>y=(-5/2)x +3
slope of line 5x + 2y = 6 is m=-5/2
slope of line perpendicular to 5x + 2y = 6 by p
product of perpendicular lines =-1
mp=-1
(-5/2)p=-1
p=-1*(-2/5)
p=2/5
equation of line with slope 2/5 at point (-4,3) is
y-3=(2/5)(x-(-4))
y-3=(2/5)(x+4)
5(y-3)=2(x+4)
5y-15=2x+8
5y-2x=15+8
5y-2x=23
5y-2x=23 is equation of the line passing through the point (4, 3) that is perpendicular to the line 5x + 2y = 6.
