Answer:
4,151,347,200
Step-by-step explanation:
To find how many ways the train can be made up we use the permutation formula and the values given.
n = 16
k = 9




So there will be 4,151,347,200 different ways that the train can be made.
The parallel lines have the same slope.
The slope-intercept form:

m - slope
b - y-intercept
We have

Therefore searched line equation is:

The line passes through point (12, 7). Put the coordinates of the point into the equation of the line:

Answer: 
For this case we have that by definition, a function is of the form:

So, we have the following system of equations:

Equating the equations we have:

Adding 2x to both sides of the equation:

Subtracting 2 from both sides of the equation:

Dividing between -4 on both sides of the equation:

Thus, the value of the variable "x" is -0.5.
Answer:
-0.5
Answer:
y-10=2/3(x-8)
Step-by-step explanation:
(y2-y1)/(x2-x1) is the equation for slope so put your points in you get 2/3 once simplified then its just a matter of putting points in the equation y-y1= m(x-x1)