I need help with these math questions, please answer them in simplest terms possible.

NOTE: Make sure to show all calculations and steps where applicable to receive full marks. Consider the linear system of equations y = -4x + 5 and 2x - 4y - 7 = 0. a. Graph the system of equations. [1 mark] X -9-8-7 -6-54 -3-2 -1 2 3 4 5 6 8 9 What is the solution to the system of equations? [2 marks] [1 mark] C . Verify the solution.2 vy, and g represent continuous linear relations. Some values from the relations are shown in the table below. {2 marks]| s 3 Use technology to determine an approximate solution to the system y = 0.44x + 12.6 and Y ==721x 556. [1 mark] 4. Samia created the following tables of values for a lincar system. She concluded that there is no solution to the system. |2 marks]| Is Samia's conclusion correct? Explain. Use the indicated method to solve each of the following systems of linear equations. Verify the solutions. Solve by substitution [3 marks] 3x + 4y = -4 x + 2y = 2 [3 marks] Solve by substitution 5x+y+20=0 2x + 2y +9=0