HELP PLEASE!!
Solve the system of equations below by graphing.
y= x - 3
y=-5/2x + 4

Nine more than four times a number is the same as one less than twice the number. find the number?

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.