3y=4x+15 and 9x+12y=12 are perpendicular, parallel or neither

What is the value of y? round to the nearest tenth

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5