## anonymous one year ago the question is "y= -2x + 1" and it needs to be graphed. Do I divied -2x by -2? Also does that make the y intercept 1? Im just checking my answer :)

1. anonymous

the x intercept is certainly 1, because $$(0,1)$$ is on the graph

2. anonymous

and no, you do not divide by anything pick an x, find the y, plot the point for example, if $$x=2$$ then $$y=-2\times 2+1=-3$$ so $$(2,-3)$$ is on the graph

3. anonymous

so can you walk me through the problem how it should be done so I know for next time?

4. anonymous

i thought i just did, but we can go slower if you like you know the y intercept is 1, because you said it, so $$(0,1)$$ is on the graph |dw:1440292521307:dw|

5. anonymous

now the slope is $$-2$$ which means for every increase of 1 in x, the y values decreases by 2

6. anonymous

Oh, so do I just plot -2 on the x-axis?

7. anonymous

but we can do ahead and plot a few points then connect the dots

8. anonymous

no you do not

9. anonymous

lets put $$x=1$$ and see what $$y$$ is

10. anonymous

if $$x=1$$ then $$y=-2\times 1+1=-2+1=-1$$ so the point $$(1,-1)$$ is on the graph

11. anonymous

|dw:1440292666244:dw|

12. anonymous

maybe now pick $$x=2$$ then if $$x=2$$ you have $y=-2\times 2+1=-4+1=-3$ so now we know $$(2,-3)$$ is on the graph

13. anonymous

|dw:1440292749283:dw|

14. anonymous

once you have a few points plotted, they should line up nicely and you connect the dots to get your line

15. anonymous

|dw:1440292799179:dw|

16. anonymous

ok thanks :)

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