A scale drawing uses the scale 3 in. = 20 ft. Find the missing measure. 57 in. = ____ ft
1 answer:
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Answer:
The equation is
Step-by-step explanation:
Let the quadratic function be
The point (-4,9) must satisfy this function,
The point (0,-7) must also satisfy this function,
The point (1,-1) must also satisfy this function,
We put equation 2 into equation 1 to get;
We again put equation 2 into equation 3 to get;
We add equation 5 and 6 to get;
We put into equation 6 to get;
The equation is therefore