Please jus solve dis

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Find the value of x in the diagram below. select the best answer from the choices provided

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.