Answer:
Step-by-step explanation:
You know these ordered pairs are considered a function, because the x intercepts do not repeat themselves. In other words, each input numbers are different. If these ordered pairs were not a function, the x intercept would be repeating. For example, 22 is already a x intercept, (22,4), if 22 was put in as another x intercept like,(22,1) these ordered pairs would not be a function.
Answer:
15 divided by 2 1/2
Step-by-step explanation:
$6 per yard.
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
----> inequality A
solve for y
![-4y](https://tex.z-dn.net/?f=-4y%3C-x%2B4)
![4y>x-4](https://tex.z-dn.net/?f=4y%3Ex-4)
The solution of the inequality A is the shaded area above the dashed line
The slope of the dashed line is positive
The y-intercept is the point ![(0,-1)](https://tex.z-dn.net/?f=%280%2C-1%29)
The x-intercept is the point ![(4,0)](https://tex.z-dn.net/?f=%284%2C0%29)
----> inequality B
The solution of the inequality B is the shaded area below the dashed line
The slope of the dashed line is positive
The y-intercept is the point ![(0,1)](https://tex.z-dn.net/?f=%280%2C1%29)
The x-intercept is the point ![(-1,0)](https://tex.z-dn.net/?f=%28-1%2C0%29)
Using a graphing tool
The solution of the system of inequalities in the attached figure
It seems that the four graphs are the same and they do not have a negative change rate in the interval 0 to 2 in the x-axis.
A negative change rate means that when x increases the value of the function (y) decreases; this is, the function is decreasing in the interval being estudied, which is the same that going downward.
So, you must look for in your graphs where the equation is going downward.
For example, in the graph attached, that happens in any interval from negative infitity to 1.5.
The vertex will help you to identify it.
Given that the graph goes downward from negative infinity to the vertex, any interval that includes that range will have negative change.
You must look for a parabola that opens upward and whose vertex is in x = 2.
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