what is the equation in slope-intercept form of the line that has a slope of 0.25 and passes through the point (6,-8)

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.

4+(2+x) can you me solve this problem

I’m really confused and need your assist me with this question i’ve never been taught