Question

Please Help Me! Math Question!

Answer 1

To solve this pair of equations, by using the substitution method, all you have to do is simply choose 1 equation and simply solve for any variable X and or y. Then solve for the other equation, by plugging in the equation.

Y = X + 4
Y = -2x - 2

X + 4 = -2x - 2
0 = -3x - 6
-3x = 6
X = -6/3
X = -2.

Y = X + 4
Y = -2 + 4
Y = 2.

P(-2,2). The following point would be the solution to the equation.

Answer 2

This will be simple since They are both solved for Y. :) put them across from each other (in parenthesis if you want to show which one was substituted). So we have ( x + 4 )= -2x - 2. Next subtract the 4 from both sides and add 2x to each side. Now we have 3x = -6. Divide by 3 and get X=-2. Plug X into an original equation and solve for Y. y = (-2) + 4. Y=2                           (2, 2)