Answer:
look at by
Step-by-step explanation:
by at look
Any straight line on the coordinate plane can be described by the equation
y=mx+b
Where:
x,y are the coordinates of any point on the line
m is the slope of the line
b is the intercept (where the line crosses the y-axis) .
The slope m can be found beetween two points on the line:
and ![(x_2,y_2)](https://tex.z-dn.net/?f=%28x_2%2Cy_2%29)
![m=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
In this case, the points is on the y-axis (0,300) and the x-axis (450,0), whereby the slope m is found:
![m=\frac{y_2-y_1}{x_2-x_1} = \frac{0-300}{450-0} = -\frac{2}{3}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%3D%20%5Cfrac%7B0-300%7D%7B450-0%7D%20%3D%20-%5Cfrac%7B2%7D%7B3%7D)
We already have b, because b is the point, where the line crosses the y-axis.
b=300
So the equation is:
⇒ ![y=-\frac{2}{3} +300](https://tex.z-dn.net/?f=y%3D-%5Cfrac%7B2%7D%7B3%7D%20%2B300)
The graph is attached.
Answer:
Domain is X-values
Range is Y-VALUES
domain as follows: -7,-3, -1, 1, and 4
Range as follows: -2,7, 6, and 3
<h2>
I think the domain of h is 3</h2>
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
We can say that 3/15 students usually go to bed at 9 P.M. We can set up a proportion to solve this problem.
3/15=x/100
We cross multiply to find x
15x=300
Divide both sides by 15
x=20
So 20% of the classmates usually sleep at 9 P.M.