Can you think of any other examples of functions?
<em>Yes! Like putting a check in the bank, that is the input- and then the money you take is the output. You can even use food to compare input and output! Ingredients are the input, and the final dish/dessert is the output. If you wanted something more mathematical, you can use a graph to find the input and output. If you know a few points, you can create a whole line of x and y points, where x= input and y=output. You can also consider getting gas for your car, the money is the input, and the gas (in return) is the output. <== these are just a few examples.
</em>
Why might this type of equation be useful?
When you are trying to find the points for a line or looking for the unit price for something, functions can be very useful! You can find what y would be when x equals 1, 2, 3, 4, etc. I know I use this all the time! For example, trying to find the best price for something in the grocery store. There are a lot of options, and if you find the unit price with functions, it makes it easier to get the best deal.
I hope this helps!
~kaikers
Answer:
Step-by-step explanation:
Given: graph
To find:the inequality
Solution:
Equation of a line passing through points 
is given by 
Take 
So,equation of line is evaluated as follows:
As per the graph,inequality is
Here, use sign < and not 
as line in the graph is dotted that is points on the line are excluded.
Answer:
9.25
Step-by-step explanation:
8|74.00
-72
20
- 16
40
- 40
00
Yes it does a line is always symmetrical in some way
Answer:
x = 25.
Step-by-step explanation:
Move all of the terms that don't contain x to the right side and solve.
Hope this helps,
Davinia.
