If the points (4, 7) and (4, 11) are on a given line, find the slope of this line
a) slope is zero
b) slope is 4
c) slope is 1/4
d) slope is undefined

The slope is undefined

Step-by step:

To obtain the slope from a line, with two points, the general equation is:

m = (y1 -y2) / (x1 -y2)

If you substitute the values in the equation you can see you will need to divide by zero, and any number divided by zero is undefined. Therefore you cannot do the operation, and you got an undefined slope. In the attached graph you will see that the values of any change in x (Δx) always will be equal to zero, because x is a constant, x = 4, for any value of y.

x1 = 4, y1 = 7

x2 = 4, y2 = 11

substitute in the previous equation:

725 parts per hour.

step-by-step explanation:

hi there, this answer is actually really simple.

you can set it up as 1450/2 or 3625/5 to find the answer.

they want to know how much per hour is being made, so you just divide.

1450/2=725.

and that's how many are produced per hour.

hope this . : )