10 Determine Length of a Rafter if the Slope & Run Are known
a
13.70" Change the decimal (.70') to nearest 16th of an inch.
1ft.
overhang
.70'
X 12
8.4"
4"
X 16th of an inch
6/16 or 3/8
24'

answer: all the values are within because it has a pattern that repeats from -6 to 4.

good luck!

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

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