Answer:
y = - 3x + 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (3, - 4) and (x₂, y₂ ) = (1, 2)
m =
=
= - 3, thus
y = - 3x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (1, 2), then
2 = - 3 + c ⇒ c = 2 + 3 = 5
y = - 3x + 5 ← equation of line
1.
D
2.
D
3.
A and D
4.
Didn't Understand
retype in comment and send
The area of the room = (40 x 24) - (20 x 12)
Area = 960 - 240 = 720 square feet
Divide square feet by width of a strip:
720 / 12 = 60 linear feet.
The answer is D.