What’s a function with a slope of 4 that includes the point a (- 1, 3)? I need an equation

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.

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.