PLEASE HELP
I WILL FAN AND METAL PLEASE!

given ABC with A(-4,-2) B(4,4) and C(18,-8)
write and equation of the line containing the altitude that passes through B in standard form.

Question

PLEASE HELP
I WILL FAN AND METAL PLEASE!

given ABC with A(-4,-2) B(4,4) and C(18,-8)
write and equation of the line containing the altitude that passes through B in standard form.

anonymous · Answer

You could use A,C to write the equation of a line, then check B is on it.

anonymous · Answer

can you help me work it out because i don't understand this at all...

anonymous · Answer

@redcan    ^

anonymous · Answer

Which form of the formula of a line do you want to start with?

anonymous · Answer

point slope form? $$y-y_1 = m(x-x_1)$$

anonymous · Answer

um sure

anonymous · Answer

Ok, how do you find m, the slope?

anonymous · Answer

y2-y1/x2-x1 ?

anonymous · Answer

yep, so in our case m = (-2 - 8)/(-4-18) = ?

anonymous · Answer

-3/11?

anonymous · Answer

$$y−y_1=(-3/11)(x−x_1)$$
now sub in y1,x1 from point A of C

anonymous · Answer

*or