PLZ HELP!!>\\< [Maximum mark: 6]
The equation of a line L, is 3.x = 12 - y.
(a) For the line L1, find:
(i) the r-intercept;
(ii) the gradient.
A second line, L2, intersects the r-axis at P(2.0) and is parallel to L.
(b) Find the equation of L2, giving your answer in the form y=mr +c.
(c) Calculate the y-intercept of L2.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.