It is this property which makes the plane "flat". Two distinct lines intersect in at most one point, two distinct planes intersect in at most one line. If two coplanar lines do not intersect, they are parallel. Two lines which re not coplanar cannot intersect and are called "skew" lines.
Answer:
the second forth and fifth on the graph.
Step-by-step explanation: have a good day!
Answer:
see explanation
Step-by-step explanation:
The denominator of f(x) cannot be zero as this would make f(x) undefined. Equating the denominator to zero and solving gives the values that x cannot be.
x² - 4 = 0 ⇒ x² = 4 ⇒ x = ± 2 ← excluded values
domain : x ∈ R, x ≠ ± 2