I don't understand these question, could someone help me, Its formative by the way.

8) Given the line y = - =x + 7, determine one possible equation for a line that is steeper and has a lower y-intercept. (**There are multiple solutions to this question* *) [2 marks]5) You want to join a gym. URFIT charges a $400 membership fee, plus $25 for each personal training session. FABFITNESS charges a $200 membership fee, plus $50 per personal training session. a) For each gym, write an equation to represent the cost of belonging to each gym. Use y to represent the cost, and x to represent the number of personal training sessions. [4 marks] URFIT: FABFITNESS: b) Graph the equations. State the point of intersection and explain the meaning of this point. [4 marks]