Use the substitution method to solve the system of equations. Choose the correct ordered pair. ( can someone please explain how the got their answer lol i don't understand.)

B. (3, 14).

Step-by-step explanation:

Substitution means that you first solve for one variable, and then use that solution to find the other.

For example, if x = y, and x + 5 = 7, you can say that y + 5 = 7.

Now, moving on to the actual problem.

The first equation says that y = 6x - 4, and the second equation says y = 7x - 7.

That means for the first equation, instead of y, it is valid to say that 7x - 7 = 6x - 4.

7x - 7 = 6x - 4

7x - 6x = -4 + 7

x = 3.

You could put the x=3 into the y = 7x - 7 equation to find what the y-coordinate is.

y = 7 * 3 - 7

y = 21 - 7

y = 14.

And there you have your coordinates! (3, 14).

Hope this helps!

Step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.