Answer:
Rate of change of y is 
Step-by-step explanation:

It might be 31 if you add all the numbers together but I'm not positive.
Answer:
I believe it is 9ft
Step-by-step explanation:
Answer:
When (-1,-4) is substituted into the second equation, the equation is true.
The ordered pair (-1,-4) is a solution to the system of linear equations.
When (-1,-4) is substituted into the first equation, the equation is true.
Step-by-step explanation:
Given


Required
What is true about 
To do this, we substitute -1 for x and -4 for y in both equations;
For 



<em>Hence: </em>
<em> is true for </em>
<em></em>
For 



<em>Hence: </em>
<em> is true for </em>
Answer:
Part 1) The scale factor is 3
Part 2) The value of x is 36 in
Part 3) The value of y is 26 in
Step-by-step explanation:
step 1
Find the scale factor
we know that
If two figures are similar then the ratio of its corresponding sides is proportional and this ratio is called the scale factor
so
In this problem
Let
z-----> the scale factor

step 2
Find the value of x
To find the value of x, multiply the length of 12 by the scale factor
so

step 3
Find the value of y
we know that

