solve this system of linear equations. separate the x- and y-values with a comma -14= -7 -7y - 10=-15 -7y

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Can someone, me with this.i really need with this