Answer:
Follows are the solution to this question:
Step-by-step explanation:
In point A:
The two-point C and y is given, where C is the scale drawing lengths and y is the actual mural lengths so, the formed equation is:

In point C
:
Using the value of the scale:
let 1 feet: 20 feet
therefore the equation is:

The size of c will be the length of:

The diagram c scale width will be:


all we can really cancel is one of the (x-5) and the "x", is all.
Answer:
The answer is C. Y= -3x+6
The answer can be found by substitute 0 into x and find the value of y. If the value is same with graph then it is correct.
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