Please I need help! Please answer it!

y = - x + 1

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 =

with (x₁, y₁ ) = (0, 1) and (x₂, y₂ ) = (3, 0) ← 2 points on the line

m = = -

Note the line crosses the y- axis at (0, 1) ⇒ c = 1

y = - x + 1 ← equation of line

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

unless if u could do my questions, if not i wouldn't want to