Question

Choose the equations that are not linear equations.

Answer 1

Answer: x^2+y=4 and -y-1 are not linear equations.

Step-by-step explanation:

The exponent in x^2 indicates this is a polynomial equatuon, because when graphed, it doesn't form a line.

In -y-1, there is no given x value. y is an output of a solved x equation, so without an x, it cannot be completed. Equations depend on a number that can be plugged in. When graphed, it appears as an error.

-x-y=2 is linear because it can be rearranged to solve for y and can be graphed as linear.

x=5 is linear because it gives an input value, and shows that the output value when solved is 0 (no y means it will always be 0). When graphed, it shows a straight line, which is linear.