Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
b=7.1¯6−2f/3
Isolate the variable by dividing each side by factors that don't contain the variable.
f=10.75−3b/2
Step-by-step explanation:
<h2>Part 1)</h2>
Let's analyze each part of the function:
FROM x = 0 TO x = 5:
We can find the equation of this line by using The Slope-Intercept Form of the Equation of a Line, that states:

So the y-intercept here is
and
, therefore:

FROM x = 0 TO x = 5:
From the previous line, we know that at
the output is:

So the point
lies on both lines.
For this new line, the slope is
So, with the Point-Slope Form of the Equation of a Line we can find the equation of this other line:

So:

The graph is shown below.
<h2>Part 2)</h2>
The graph of the linear function
is a line with slope
and
at
. From the items, we can assure that the following equations are linear functions:

In conclusion, the other functions are nonlinear and they are:

9/10. make the bottom numbers the same to add fractions. you can do that by multiplying 7/10 by 10/10.
70/100 + 20/100 = 90/100
90/100 = 9/10
you can also reduce 20/100 to 2/10.
7/10 + 2/10 = 9/10