Choose the algebraic description that maps the image XYZ onto X’Y’Z’ PLEASE HELP

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?