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40 votes
40 votes
Can someone explain this question to me please

Can someone explain this question to me please-example-1
User Tanmaya Meher
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3.7k points

2 Answers

15 votes
15 votes
you plug in the (x,y) from the graph into the solution, once you solve the solution if those two numbers equal your -4, then it is a solution
User Peter Kiss
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2.9k points
10 votes
10 votes

Replace x in y in the equation and see if it is true:

5x + 3y = -4

5(-5) + 3(7) = -25 + 21 = -4

(-5,7) is a solution

5(1) + 3(-3) = 5 + -9 = -4

(1,-3) is a solution

User TC Zhang
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2.3k points