Question

Is (7, -2) a solution to this system of equations?
X - 5y = -3
y = -2
yes
no

Answer 1

No.

Explanation:

Plug in -2 for y and 7 for x in the first equation:

x - 5y = -3

(7) - 5(-2) = -3

Simplify. Remember to follow PEMDAS.

PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& roots)

Multiplications

Divisions

Additions

Subtractions

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First, multiply -5 with -2:

7 + (-5 * -2) = -3

7 + (10) = -3

Next, add:

7 + 10 = -3

17 ≠ -3

(7, -2) is not a solution for the given system of equations:

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