Thursday

October 2, 2014

October 2, 2014

Posted by **Emil** on Wednesday, November 23, 2011 at 2:09pm.

A: 4,-2

B:-2,-1

C: 4,3

How do i get the height of it in relation BC?

And, how do i calculate the total area of the triangle?

Made this atm:

AB:

((-2)-4)/((-1)-2) = 2;

y-2=2(x-1)

y = 2*x;

BC:

(4+2)/(3+1) = 3/2;

y-2 = 3/2*(x-1);

y = (3/2)*x+1/2;

Took explanation out, it is in another language ;)

- math -
**Reiny**, Wednesday, November 23, 2011 at 4:33pmIf you were finding slope, then you have it upside down.

slope AB = (-2 + 1)/(4+2) = -1/6

slope of BC = (3+1)/(4+2) = 4/6 = 2/3

equation of BC

y-3 = (2/3)(x-4)

3y - 9 = 2x - 8

2x - 3y + 1 = 0

distance from A(4,-2) to BC

= |2(4) - 3(-2) + 1|√(2^2 + (-3)^2)

= 15/√13

**Answer this Question**

**Related Questions**

isosceles triangle - An isosceles triangle is a triangle that has two equal ...

physics - Three particles of masses 14 kg, 21 kg, and 69 kg are located at the ...

geometry - okay i have a few question... 1.Find the equation of a line through ...

Algebra - Write a system of inequalities to express the exterior of the triangle...

math - i have trouble finding the answer to this and how to srt. there is a ...

Math - Point A lies at (2, 3) on a coordinate system. If the coordinate axes are...

math,algebra II - can someone show me examples of what is a practical ...

maths please help - how do you find the isoperimetric quotient of an n sided ...

Geometry - Hi, I don't have much time to turn this in. I think I got all the ...

math - i have a test coming up and i have no idea how to do rotations on a ...