4x^2 + kxy - 9y^2
how to solve for k?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Why is x= 4 a solution to the proportion 14/x 56/1 6