Y=2x+8 3x+2y=-5 find the solution to this system. answer and explain this, i can't seem to get these questions and im really struggling! !

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 −5 0 −1 1 3 g(x) g(x) = 2x − 7 part a: write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points) part b: which function has a greater y-intercept? justify your answer. (4 points)

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.