Friday

April 18, 2014

April 18, 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

**Related Questions**

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

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

geometry - draw the triangle into a coordinate system of (-7) to 7. Designating ...

geometry - Find a coordinate rule for a reflection across the line y = 2x. Then ...

math - a triangle ABC has the coordinate A(0,3)b(3,0)c(-3,0) if you translate ...

math - when you subtract the second x-coordinate from the first x-coordinate, ...

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

Precalculus - This figure shows concentric circles of radii 3 and 5, ...

U.S. History - please check this answer 1. A major goal of the encomienda system...

calculus - Find the x-coordinate of the point P on the parabola y=1-x^2 (0<x...