Answer:
Step-by-step explanation:
The line passes through (2, 8) and (4, 12). Slope m = rise/run = (12 - 8)/(4–2)= 2
if (2,8) is taken as (x1,y1)
Equation of straight line is y - 8 = m(x-2) i.e y - 8= 2(x- 2)
Answer:
is not a function
Step-by-step explanation:
Given




Required
Which is not a function
A function is of the form 
Assume a function is:

In simple terms:
For an ordered pair to be regarded as a function, no x value must be repeated
Analyzing the options:
1. 
This is a function because none of the x values (-3, 8, 0 and -9) appeared more than once
2. 
This is a function because none of the x values (5, -3, 0 and -9) appeared more than once
3. 
This is a function because none of the x values (9, -5, 5 and 6) appeared more than once
4. 
This is not a function because one of the x values (2) appeared more than once.
i.e.
and 
Answer:
<h2>
Explanation:</h2>
For any right triangle, the longest side is called the hypotenuse. Therefore, by Pythagorean theorem it is true that:

Where:
x: Hypotenuse
a, b: The other two sides.
For instance, if we have a right triangle whose sides measure:

Then, the hypotenuse can be found as:

Answer:
780
Step-by-step explanation:
For this we have to find the 20% of $975.00
= 20% of 975
= 20/100 (975) (Removing percentage sign gives us 100)
= 0.2 (975)
= 195 (that's the 20% of 975 which is taken)
NOW,
Subtract 195 and 975 to find the remaining amount
= 975 - 195
=780 Answer
![\left[\begin{array}{ccc}2&6&3\\-5&1&4\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%266%263%5C%5C-5%261%264%5Cend%7Barray%7D%5Cright%5D)
R1 ÷ 2 = ![\left[\begin{array}{ccc}1&3&1.5\\-5&1&4\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%261.5%5C%5C-5%261%264%5Cend%7Barray%7D%5Cright%5D)
R2 ÷ -5 = ![\left[\begin{array}{ccc}1&3&1.5\\1&-0.2&-0.8\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%261.5%5C%5C1%26-0.2%26-0.8%5Cend%7Barray%7D%5Cright%5D)
R2: R1 - R2 = ![\left[\begin{array}{ccc}1&3&1.5\\0&3.2&2.3\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%261.5%5C%5C0%263.2%262.3%5Cend%7Barray%7D%5Cright%5D)
R2 ÷ 3.2 = ![\left[\begin{array}{ccc}1&3&1.5\\0&1&0.71875\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%263%261.5%5C%5C0%261%260.71875%5Cend%7Barray%7D%5Cright%5D)
R1: R1 - 3R2 = ![\left[\begin{array}{ccc}1&0&0.65625\\0&1&0.71875\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%260.65625%5C%5C0%261%260.71875%5Cend%7Barray%7D%5Cright%5D)
Answer: x = 0.65625, y = 0.71875