You can tell whether a relation is a function by plotting the numbers on a graph and applying the vertical line test. If no vertical line passing through the graph intersects it at more than one point, the relation is a function.
Answer:
We choose B. (1, 10)
Step-by-step explanation:
Given the exponential model in the form y = a
- passes through the points (2, 50)
<=> 50 = a
<=> a =
(1)
- passes through the points (3, 250)
<=> 250 = a
(2)
Substitute (1) into (2) we have:
250 = ![\frac{50}{b^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7B50%7D%7Bb%5E%7B2%7D%20%7D)
<=> 50b = 250
<=> b = 5
=> a =
= 2
Hence, our exponential model is: y =2*
Let analyse all possible answer:
A. (0, 5) we have: y =2*
≠ 5 so it is wrong
B. (1, 10) we have: y = 2*
so it is true
C. (4, 450) we have: y = 2*
≠ 450 so it is wrong
D. (5, 650) we have: y = 2*
≠ 650 so it is wrong
Hence we choose B. (1, 10)
Answer:
x = 6+5y
Step-by-step explanation:
x - 5y = 6
Add 5y to each side
x - 5y+5y = 6+5y
x = 6+5y
Answer:
Necessary
Step-by-step explanation:
X=4 so your problem now would be 3+4=7
Hope this helps!
So in short your answer is 4