According to this chart, you could plug in the two points in the formula of the line equation you want!
The prime factorization of 60 is 2-2-3-5
the prime factorization of 30 is 2-3-5
the extra factor is 2 :)
Answer:
y = 2x – 1
Step-by-step explanation:
The graph is a line then it’s equation has this form y = ax + b where a the slope and the y-intercept
the y-intercept b = -1 cause the line intersects the y-axis at the point (0 , -1)
![a=\frac{3-(1)}{2-0}=\frac{2}{2}=1](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B3-%281%29%7D%7B2-0%7D%3D%5Cfrac%7B2%7D%7B2%7D%3D1)
Finally,
y = ax + b
= 2x - 1
Answer:
30 mph
Step-by-step explanation:
let s represent speed and h represent rebound.
Given that s is proportional to h then the equation relating them is
s = kh ← k is the constant of proportion
To find k use the condition s = 20, h = 10, then
20 = 10k ( divide both sides by 10 )
2 = k
s = 2h ← equation of proportionality
When h = 15 , then
s = 2 × 15 = 30 mph