11. The news reports that today's high temperature is 16°F colder than yesterday's high temperature. Yesterday's high temperature was -2°F.

a. Write an expression to represent today's high temperature.

b. Reasoning is today's high temperature positive or negative? Why?

b

step-by-step explanation:

to complete this square you have to rotate about the origin 270 degrees clockwise.

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.