A line passes through tge points (1,-3) and (4,6) what is the zero of this line ?

The zero of the line is (2,0)

Step-by-step explanation:

The equation of a line passing through points (x1,y1) and (x2,y2) can be found as:

We are given the points (1,-3) and (4,6). Substituting:

Operating:

The zero of this line can be found by making y=0 and solving for x:

0+3=3(x-1)

3=3x-3

Adding 3:

6=3x

Solving:

x = 2

The zero of the line is (2,0)

f(x) has value 150 at x= 0

and 0 at x= 3

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

your answer is  

a.

5

step-by-step explanation: