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.Com
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)   (Show Source): You can put this solution on YOUR website!


Hi,

y = 2x+1 

t-table 















 

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





Here's a graph of that equation.











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.



 

RELATED QUESTIONS


Please help with this equation:
2x+z+3w=0
-x+2y-z-2w=2
x-y+w=2

I did this:
 2 0  1  (answered by Alan3354)

Can someone please graph this curve for me, here is my work so far:

For the function... (answered by stanbon)

what are the order pairs for y from these  equations

Y=2^2x

{(-1, ) (0, ), (1, ),... (answered by Tatiana_Stebko)

y+-1-2/3(-1)
 (answered by Alan3354,fractalier)

I have to solve a 4X4 matrix
w  x  y  z
2 -2 -2  2 10
1  1  1  1 -5
3  1 -1  4 -2
1   (answered by vidyamanohar)

1/(2X-4)- 2/(y+1)=0      and 1/(x-3)- 1/(y+4)=0
Solve using... (answered by ankor@dixie-net.com)

Please tell me if I am doing this right. I have to complete the table with the given... (answered by richwmiller)

Finding true conjecture 

X Y
0 3
1 2
2 1
3 0 
4 -1
 (answered by Edwin McCravy)

-2(-1)+y=0 (answered by checkley77)