If 4x - y = 13 and 2x + y = 17 , then what does 3y - 2x = ?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1