HELP ASAP Given the system of linear equations. x=y+3 y=-4x-3Part A: Solve the linear system of equations by graphing Part B: Use substitution to solve the linear system of equations Part C: Use addition to solve the linear system of equations In your final answer, include all of your work, the graph of the equations and the solution.
Accepted Solution
A:
A) I included a graph, look below.
B)
Input the y in x = y + 3.
x = (-4x - 3) + 3 x = -4x + 0 Add 4x to both sides. 5x = 0 Divide both sides by 5. x = 0
Input that x value in y = -4x - 3
y = -4(0) - 3 y = 0 - 3 y = -3
(0, -3)
C)
Convert both equations to Standard Form.
x = y + 3 Subtract y from both sides. x - y = 3
y = -4x - 3 Add 4x to both sides. 4x + y = -3
Add the equations together.
4x + y = -3 x - y = 3 equals 5x = 0 Divide both sides by 5. x = 0