this is very simple, a group of eight friends go to the movies. a bag of popcorn cost $2.99 how much will it cost to get one bag of popcorn for each friend explain I can calculate this amount mentally​

Step-by-step explanation:

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Graph using slope and the y intercept

So y=x+5
You would plot the y intercept (0,5) and then go up 1 and to the right 1

The next graph plot y intercept (0,-1) and then go down 2 and to the right 1

And should look like the image

And your solution should be (-2,3) which is option c