SOLUTION: here's the math problem:y=2x+1 here's what i did: x|y -2 -4 y=-2(-2)+1=-4 -1 -3 y=-2(-1)+1=-3 0 1 y=-2(0)+1 =1

Algebra ->  Graphs -> SOLUTION: here's the math problem:y=2x+1 here's what i did: x|y -2 -4 y=-2(-2)+1=-4 -1 -3 y=-2(-1)+1=-3 0 1 y=-2(0)+1 =1       Log On


   

Question 360683: here's the math problem:y=2x+1
here's what i did: x|y
-2 -4 y=-2(-2)+1=-4
-1 -3 y=-2(-1)+1=-3
0 1 y=-2(0)+1 =1
1 1 y=-2(1)+1=1
2 3 y=-2(2)+1=3
the we have to graph the x|y answers on a graph and when we graph it has to make a line or else we did something wrong.....my teacher did the problem above and when i graphed it didn't make a straight line..but he insist that he did it right HELP
Found 2 solutions by ewatrrr, Theo:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

y = 2x+1 

t-table

Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
y = 2x + 1 is a straight line.

Here's a graph of that equation.

graph%28600%2C600%2C-10%2C10%2C-20%2C20%2C2%2Ax%2B1%29

here's the table of values for y = 2*x + 1 from x = -2 to x = 2 


               x	y
              -2       -3
              -1       -1
               0        1
               1        3
               2        5

It looks like you are forgetting to multiply first and then add.

in the formula 2 * x + 1, you need to do the multiplication first and then add.

if you put parentheses around the operations that need to be done first, then the equation would look like this:

(2 * x) + 1

if the value of x is 1, then 2 * 1 = 2 and then you add 1 to it to get 3.

follow the same procedure for all values of x and you'll be ok.