You are going to use an incline plane to lift a heavy object to the top of a shelving unit with a height of ft. The base of the incline plane is ft from the shelving unit. What is the length of the incline​ plane? An incline plane forms a right triangle. The height of the incline plane is 7 feet and the base is 12 feet.
7 ft
12 ft
​(This figure is not drawn to​ scale.)
The length of the incline plane is about
nothing ft.
​(Round to the nearest tenth as​ needed.)

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form