Answer all of there please!

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?