Find the value of a if y=a/7x + c is parallel to y = 2x - 4

In the surface area formula for cylinders which expressionrepresents the lateral area

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)