Question

Justine and Meagan played a trivia game. Justine answered a question incorrectly and lost 7 points. Then Meagan answered correctly and got the opposite score. Which is the correct way to represent that “the opposite of Justine’s score was equal to Meagan’s score

Answer 1

Answer:

$m = -j$, or in this case, $m=-(-7)$

Step-by-step explanation:

Assuming that Justine's score is represented by $j$ and Meagan's score is represented by $m$, we know that $j$ will always be the opposite of $m$.

To represent opposite, we put a negative sign before the variable.

This makes the current number, even if it's negative, the opposite value.

Let's test it out.

Since Justine's score is -7, substituting it into the equation makes it  $m=-(-7)$. We know that two negatives make a positive, so $m=7$.

Now let's assume Justine's score is 7. Plugging it into the equation, we get $m=-(7)$. That's the same thing as $m = -1(7)$, and -1 times 7 is -7.

Hope this helped!