Step-by-step explanation:
Substituting y = - 4x then putting in the equation
-4x = 3x + 28
Bringing like terms on one side
-4x - 3x = 28
-7x = 28
- ( 7x = - 28
x = - 28 / 7 = - 4
The solution of the equations is given by the substitution method. the value of x and y will be negative 4 and 16.
The solution of the equation means the value of the unknown or variable.
The equations are given below.
y = 3x + 28 ...1
y = – 4x ...2
Put equation 2 in equation 1, we have
–4x = 3x + 28
–7x = 28
x = –4
Put x = –4 in equation 2, we have
y = –4 x (–4)
y = 16
More about the solution of the equation link is given below.
https://brainly.com/question/545403
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