Answer:
y=3x-2
Step-by-step explanation:
Every relatio is in the form y = mx+c
x1,y1 x2,y2
(-2,-8) (-1,-5)
![m = \frac{ {y}{2} - {y}{1} }{ {x}{2} - {x}{1} }](https://tex.z-dn.net/?f=m%20%3D%20%20%5Cfrac%7B%20%7By%7D%7B2%7D%20%20-%20%20%7By%7D%7B1%7D%20%7D%7B%20%7Bx%7D%7B2%7D%20%20-%20%20%7Bx%7D%7B1%7D%20%7D%20)
![\frac{ - 5 - (- 8 )}{- 1 - ( - 2)} = \frac{3}{1} = 3](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20-%205%20-%20%20%28-%208%20%29%7D%7B-%201%20-%20%28%20-%202%29%7D%20%20%20%3D%20%20%5Cfrac%7B3%7D%7B1%7D%20%20%3D%203)
Now since we have found m(slope/gradient), we pick any one of the coordinates and substitute into the formula along with the gradient.
Let's pick (-2,-8)
-8=3(-2)+c
-8=-6+c
-8+6=c
-2=c
=>c=-2
So the equation becomes
y=(3)x + (-2)
every rational number can be written as a fraction
Answer = 63
Explanation
You could set up a ratio of y1/y2 = x1/x2
In your case
3/21=9/x
3x=189
X=63
I would say that the correct answer is C because if you look up on the chart thing, it tells you how you would see the graph. For example, when you have:
1| 03145
2| 4 6 3 7
Which one has the most value to it? It would be the 2| 4 6 3 7, because when you put them together, it makes 24, 26, 23, 27. Hope this helps.