Determine whether -3x = y + 6 represents a linear or non-linear function. Explain.
non-linear, can be written in the form y = -3x - 6

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.