The circle is closed when it is = and open when it is not = to the number that is being circled.
Answer:
Radius = r
Radius = 7.5cm
Diameter = 2r = 2 x 7.5cm = 15cm
Vertical asymptotes ares found where the function is undefined. f(x) is undefined when the denominator equals zero:
x^2-1=0
<em>*Add 1 to both sides*</em>
x^2=1
<em>*Take the square root of both sides*</em>
x=+/-1
There are vertical asymptotes at x=-1 and x=1.
Hope this helps!!
Answer:
{(–4, 2), ( –2, 1), (2, 0), (4, 5)}
Step-by-step explanation: Look at the first number in each bracket for domain :)