PDA

View Full Version : 10 ft brace w/ top 6 ft above floor: find slope of bracing



afritts1987
10-09-2008, 10:04 PM
10-foot plank is used to brace a basement wall during construction of a home. The plank is nailed to the wall 6 feet above the floor. The slope of the plank is _____?

Now, would I use the number 10 and the number 6 as the coordinates or points for x and y? Otherwise I don't understand how to get the slope from a word problem.

Subhotosh Khan
10-09-2008, 10:14 PM
10-foot plank is used to brace a basement wall during construction of a home. The plank is nailed to the wall 6 feet above the floor. The slope of the plank is _____?

Now, would I use the number 10 and the number 6 as the coordinates or points for x and y? Otherwise I don't understand how to get the slope from a word problem.




|A
|\
| \
6 | \
| \
B |______\C



AC = 10 Plank

AB = 6

BC = ??? (recall pythagorus)

Slope \, = \, \frac{Rise}{Run} = \frac{??}{??}