Given:
The speed, s, is measured in miles per hour, and distance, y, is measured in yards.
The regression line is given by
...(i)
To find:
The slope and y-intercept of the regression line.
Solution:
The general form of linear regression line is
...(ii)
where x is variable. In the given equation the variable is denoted by s.
On comparing (i) and (ii), we get
![a=4.17, b=52.45](https://tex.z-dn.net/?f=a%3D4.17%2C%20b%3D52.45)
It means slope is 52.45 and y-intercept is 4.17.
The slope, b = 52.45, indicates that the distance increases by 52.45 yards for every one mile per hour of speed.
The y-intercept, a = 4.17, is the distance estimated by this model if the speed is zero miles per hour.
Therefore, the correct option is A.
Yes! All the domain (or x numbers) are increasing by 1. All the range (or y numbers) are increasing my 3 each time. If you were to put it on a graph, you would see the line straight and increasing in a congruent proportion.
Non-linear
The line should be an exponential function, as it halves in mass every time a certain amount of time has passed.
Answer:
D. x-6
Step-by-step explanation:
4x^2 - 4x - 120
4(x-6)(x+5) are the factors.
Answer:
A, b,e
Step-by-step explanation:
a: x+6=5+x
+x-x=5-6
0=1
so this eqn is out
b: -2 (x-3)=-2x+6
-2x-6=-2x+6
-2x+2x=+6+6
0 = 12
so this eqn is also out
c:4-4x=3 x+2
-4x-3x=+2-4
-7x=2
×=2/-7
so this eqn is correct ♥
D:4 (x+1)=3 (x+2)
4x+4=3x+6
4x-3x=+6-4
1x=+2
x=2
so this eqn is correct♥
E:5-3x=-3x+4
-3x+3x=+4-5
0=-1
so this eqn is out
c: