Question

18. The vertices of a triangle ABC are A (1,1), B (-3,4), C (2,-5). The equation to the
altitude through the vertex A is
1) 5x +9y+4= 0 2) 5x + y - 4 = 0 3) 5x - 9y+4= 0 4) 5x - 9y - 4 = 0



who helps me to get correct anser I will mark as brilist answer and who sends wrong ans I will report​

Answer 1

Step-by-step explanation:

Slope of BC=

4−6

11+1

=−6

Since the line AD is perpendicular to the line BC, slope of AD=

6

1

∴ Equation of AD is y−y

1

=m(x−x

1

)

y−1=

6

1

(x−2)⇒ 6y−6=x−2

∴ Equation of the required straight line is x−6y+4=0