Determine if the following relations are functions or not. The code to unlock puzzle one will be a series of the letters F, for FUNCTION, and N, for NON FUNCTION. If the answer to number one is a FUNCTION the first letter of the code will be F and so on. For Example: FFNNFNNF Please I really need help on this one

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?