# SOLUTION: Use a graph to solve each system of equations. 15. y=x+5 y=2x+6 And then it gives me a graph to graph it!! HEPL PLEASE I HAVE A TEST TOMORROW AND I KEEP ON GETTING F AN

Algebra ->  Algebra  -> Linear-equations -> SOLUTION: Use a graph to solve each system of equations. 15. y=x+5 y=2x+6 And then it gives me a graph to graph it!! HEPL PLEASE I HAVE A TEST TOMORROW AND I KEEP ON GETTING F AN      Log On

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 Algebra: Linear Equations, Graphs, Slope Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Linear-equations Question 78779This question is from textbook Pre-Algebra : Use a graph to solve each system of equations. 15. y=x+5 y=2x+6 And then it gives me a graph to graph it!! HEPL PLEASE I HAVE A TEST TOMORROW AND I KEEP ON GETTING F AND I CAN"T FAIL MATH CUZ I"M GOING TO GET IN BIG TROOUBLE!!! HELP PLEASE!!This question is from textbook Pre-Algebra Answer by mathdoc314(58)   (Show Source): You can put this solution on YOUR website! Well do you know how to graph? You start with two number lines sorta like this ``` | 4 | 3 | 2 | 1 | -1--0--1--2--3--4-- ``` Then you graph the two lines. y=x+5 has slope=1 and y-intercept is 5 ``` | 6 / | / 5 /| / 4 | .... | -1--0--1--2--3--4-- ``` but you have to do that on paper because it is hard to type. The other one y = 2x + 6 it has slope=2 (steeper) and y-intercept is 6 so ``` 7 / |/ 6 / /| / / 5 / /| / 4 | .... | -1--0--1--2--3--4-- ``` From this crude graph it appears to me that maybe they cross at x=-1 and y=4. Is this true? You can verify it: x=-1 -> plug into y = x + 5 ->> y is -1+5 which is 4 (x = -1, y = 4) the point (-1, 4) is on the first line! x=-1 -> plug into y=2x + 6 -->> y is -2+6 which is also 4 (x = -1, y = 4) the point (-1,4) is on the second line! So (-1, 4) is the point where they intersect. Does this make sense? I typed a lot so you would be able to understand it all. I am not sure which part of graphing two lines and spotting the intersection you found to be tricky.