SOME! PLEASE HELP ME!!! I NEED HELP ASAP!! WILL GIVE MEDAL AND FAN!
Part 1: Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose that method.
Part 2: Solve the following system of equations and show all of your work.
5x + 3y = 8
y = −2x + 1
Stacey Warren - Expert brainly.com
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Substitution: It would be used because one equation is given as "y" alone with no coefficient so it would be easily substituted in the other equation.
Elimination: It would be used because "y" can be canceled out by multiplying the second equation by -3 and ordering the first equation correspondingly with the second and then u would find x and substitute its value in one of the equations.
Solution: y= - 2x + 1 --> -3y = + 6x - 3
5x+3y = 8 --> 3y = - 5x +8
Answer: (make a line) : 0 = x + 5 --> (x= - 5) and (y =11)
I'm a hundred % sure of this. I even substituted my results in the calculator and they were equal ;D
As simple as that!
But the bottom equation already has y isolated... no need to multiply any equation by anything, just sub that expression for y back into the first equation.
That would be my preferred method, but it is largely a matter of preference, either will work. :)