1:Lee graphs the line y = 2x + 8 on a coordinate plane. What are the coordinates of the x-intercept of the line?

2:Data collected and plotted by Shawn has generated the quadratic equation y = -3x^2 - 6x + 4. What are the coordinates of the maximum of this function?

3:Hector graphs the line y = -2x + 3 on a coordinate plane. Jon graphs a line perpendicular to Hector's line, passing through the point (1,-2). What is the slope of Jon's line?

4:Juan plots two points on a coordinate plane: (-2,3) and (4,-1). What is the slope of the line that contains these two points?

any help would be greatly appreciated!!