Write 3x-y+9=0 in slope intercept form

can somebody explain to me how to get the solution

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.

What is the solution to the equation below? 3/x-2+6=square root x-2 +8