Select the correct answer. Which of the equations below represents a line parallel to the y-axis?
A. x = 4
B. x = 4y
C. x = y
D. x = -y

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Charlie tosses five coins. what is the probability that all five coins will land tails up.