The equation y=ax describes the graph of a line if the value of a is negative the line

What's the difference between: x≥0 and nonnegative integer. ?

What graph correctly matches the equation y equals two negative x

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function