Six times twelve minus 4 equals forty-eight
Answer: This is <u>not</u> a function
Why not?
The input x = 2 leads to more than one output. In this case, it leads to y = 20 and y = 40 simultaneously. This is the reason why we don't have a function. A function is only possible if each input x leads to exactly one y output.
Put another way: we cannot have x repeating any values if we want a function.
Side note: We could have y repeat however. So it's possible to have a function with the two points (1,5) and (3,5).
Answer:
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<em>A</em><em> </em><em>and</em><em> </em><em>D</em>
Answer:
A. 
Step-by-step explanation:
Radius:
The length of diameter
is the distance between A and B.

Centre:
Since A and B are end points of the diameter, centre is the mid point of these two. Let
be the centre of the circle.

Centre is 
Equation of circle:
If
is the centre of the circle and
be the radius. Equation of circle is given by:


Answer:
E(-5, - 6) D(5,-6) C(0,0)
Step-by-step explanation:
The strategy here is run then rise/fall
For example: for E, you run back - 5, then fall - 6