Answer: 480
Step-by-step explanation:
The easiest thing to do to solve all of these is to use the quadratic equation.

The first number (the one attached to x^2) is equal to a. The second number (the one attached to x) is b. The final number (the one with nothing attached) is c.
Answer:

Step-by-step explanation:
For this case we need a line parallel to the plane x z and yz. And by definition of parallel we see that the intersection between the xz and yz plane is the z axis. And we can take the following unitary vector to construct the parametric equations:

Or any factor of u but for simplicity let's take the unitary vector.
Then the parametric equations are given by:



Where the point given 
And then since we have everything we can replace like this:




Answer:
4
Step-by-step explanation:
the formula to calculate slope is
m=( y2-y1)/(x2-x1)
here,
(9,2)= x1 ,y1
(10,6)= x2 ,y2
putting the values in formula , we get
m= (6-2)/(10-9)
=4/1
= 4