What is the value of 7x-2x+3,when x=2

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Graph the linear function using the slooe and y intercept