Question

Determine the missing coordinate in the ordered pair (?,5) so that it will satisfy x+6y=18

Answer 1

We can start by rewriting the equation:

x + 6y = 18

Because we already have our y-coordinate, we can plug it in for the equation.

x + 6(5) = 18

Now we can simplify.

x + 30 = 18

Since we are adding 30 to a number to get another number less than 30, we can presume that x equals a negative number. 30 - 18 = 12. That means that x would equal -12.

Now we can plug -12 in as x to see if our equation is valid.

-12 + 30 = 18

Because negative 12 added to 30 does equal 18, we know that our equation is correct.

Your final answer: The missing coordinate is -12. The final ordered pair is (-12,5). If you need help understanding, let me know and I will gladly assist you.