Ask your own question, for FREE!
Mathematics 9 Online
OpenStudy (dumbsearch2):

Geometry theorem problem:

OpenStudy (dumbsearch2):

OpenStudy (anonymous):

It looks like this is asking you to prove that segments AC and BC are perpendicular using the slope formula. \[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]

OpenStudy (dumbsearch2):

what would y and x be? @peachpi

OpenStudy (anonymous):

you'd use the coordinates of the points. For example, A is (-c, 0) so for point A, x = -c and y = 0.

OpenStudy (anonymous):

so to find the slope of AC, the points to plug into the formula would be (-c, 0) and (a, b)

OpenStudy (dumbsearch2):

(b)/(a+c) is not in any of the answer choices @peachpi

OpenStudy (dumbsearch2):

I used that formula but I don't get the answer.

OpenStudy (anonymous):

are you sure, b/(a + c) looks like it's part of 3 of the answer choices

OpenStudy (anonymous):

so you have the slope of AC. Find the slope of BC

OpenStudy (dumbsearch2):

does it equal = -1 or = 1?

OpenStudy (anonymous):

slopes of perpendicular lines multiply to -1

OpenStudy (anonymous):

they're opposite reciprocals

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!