Answer: y = -x + 7
Step-by-step explanation:
The slope is
, so we know the equation is of the form
.
Substituting in the coordinates (1,6) to find b,

Thus, the equation is y = -x + 7
The acute angle inside the triangle is 57 degrees. The one labeled “1” is 123 degrees.
The standard form of a parabola is

So, if you expand the square, you get

which is the standard form
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