Question

Can any one help with this? I am just stumped on this problem!
plot each point and form the triangle ABC. Verify that the triangle is a right triangle. Find its area.

A =(4, −3); B =(4, 1); C = (2, 1)

Answer 1

thats it roughly
find lengths of the 3 sides
and Check that AC^2 = AB^2 + BC^2 so proving ABC is rt angled

Answer 2

No negative x values here, but not that important

Answer 3

oh - right - i messed up there1

Answer 4

The distance formula is \[d=\sqrt{(y2-y1)+(x2-x1)}\]
You don't need to find the square root though because you're just going to be squaring them again when using the Pythagorean theorem.

Answer 5

for example BC^2 = 0^2 + (4-2)^2 = 4

Answer 6

Thanks guys :)