Can somebody please help me ASAP.
1.What is the equation of a line that has a slope of ⅔ and a y-intercept of -3? 2. What is the eqation of a line that has a slope of 3? 3. Lable the 2 e0quations as proportional or non-proportional and why.

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Pls! does anybody know a shortcut for answering these types of questions in the future?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?