For a linear equation, y = - 4x -2, what is the y-intercept and what is the algebraic definition of it?

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?