Answer:
2)
d. -1 1/2
3)
c. 21 1/2
Step-by-step explanation:
Answer:
A. The distance from any point in the circle to the origin
Step-by-step explanation:
The distance formula tells you that the distance (d) is related to the coordinates of two points (x1, y1) and (x2, y2) by ...
d² = (x2 -x1)² +(y2 -y1)²
For points (x, y) on the circle and (0, 0) at the origin, this becomes ...
d² = (x -0)² +(y -0)²
If we want the distance to the point (x, y) to be equal to the radius of the circle, this becomes ...
x² +y² = r² . . . . . . the standard equation of a circle centered at the origin
ANSWER: y-9=-1/2(x+4)
Reasoning: Just got to fill in the format
Format is: y-y1=m(x-x1)
It is a rational number :)
Answer:
the answer is
f(x)=1/√(x-3)
Step-by-step explanation:
we know that
case a) f(x)=3x
the domain is all real numbers------> interval (-∞,∞)
case b) f(x)=√x
the domain is all real numbers greater or equal than 0
the interval [0,∞)
case c) f(x)=3x+4
the domain is all real numbers------> interval (-∞,∞)
case d) f(x)=1/√(x-3)
the denominator can not be zero and can not be negative
so
(x-3) > 0-----> x > 3-----> the domain is all real numbers greater than 3
the interval is (3,∞)
the answer is
f(x)=1/√(x-3)