I believe it is -1 since -3 times -1 equals 3 and the rate of change is based on the slope of a line
8 + 2(10 - r) = 8 + 20 - 2r = 28 - 2r
Answer:
y = -
x + 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + b ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (2, 3) and (x₂, y₂ ) = (4, 2) ← 2 points on the line
m =
= - 
Note the line crosses the y- axis at (0, 4) ⇒ c = 4
y = -
x + 4 ← equation of line
6n+3=2
Regroup
6n=2-3
6n=-1
Divide by 6n
6n/6n=-1/6n
=-0.16666