(a) The graph of the system of equations in the image attached.
(b) The solution of the two system of equations is (-12, 41).
How to solve the linear equation using graph?
The solution of the two system of equations can be obtained using graphing calculator as shown below.
The given system of equations;
y = -3x + 5
y = -4x - 7
To plot the graph, we can choose random values of x and calculate the corresponding values of y.
For example, when x = 0, the value of y is calculated as;
y(0) = 0 + 5 = 5
y(0) = 0 - 7 = -7
when x = 1, the value of y is calculated as;
y(1) = -3(1) + 5 = 2
y(1) = -4(1) - 7 = - 11
Thus, from the graph, the solution of the two system of equations = (-12, 41)