what is the effect on the graph of the linear parent function, f (x) = x, when f ( x ) is replaced by f (x +5)
1 answer:
Answer:
When f(x) is replaced by f(x+5), it will shift the parent function '5 units' to the left.
Step-by-step explanation:
- We know that when we add a number 'a' to the input of the function, it would move the parent function 'a' units to the left.
In other words, the rule is:
- f(x + a) will shift the parent function 'a units' to the left.
Given the function
Thus, when f(x) is replaced by f(x+5), it will shift the parent function '5 units' to the left.
- The effect on the graph of the linear parent function is shown in the attached diagram.
In the graph, the red line is representing the parent function f(x) and the blue line is representing the effect on the graph i.e. f(x+5).
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<h2>Hello!</h2>
The answer is:
They will be 10 miles apart after 3 hours.
<h2>Why?</h2>To calculate how long after they start will they be 10 miles apart, we need to assume that after 1 one hour, they were at the same distance (5 miles), then, calculate the time when they are 10 miles apart, knowing that Paul increased its speed two times, running first at 5mph and then, at 10 mph.
The time that will pass to be 10 miles apart can be calculated using the following equation:
Calculating the time to reach 5 miles for both Larry and Paul, at a speed of 5 mph, we have:
We have that to reach a distance of 5 miles, they needed 1 hour. We need to remember that at this time, they were at the same distance.
If we want to know how many time will it take for them to be 10 miles apart with Paul increasing its speed to 10mph, we need to assume that after that time, the distance reached by Paul will be the distance reached by Larry plus 10 miles.
So, for the second moment (Paul increasing his speed) we have:
For Larry:
Therefore, the distance of Paul will be equal to the distance of Larry plus 10 miles.
For Paul:
Then, there will take 2 hours to Paul to be 10 miles apart from Larry after both were at 5 miles and Paul increased his speed to 10 mph.
Hence, calculating the total time, we have:
Have a nice day!