Am I right about the first equation matching the graph of this? Attachment 30545 If not which one does it match?

Printable View

- Mar 28th 2014, 12:51 PMcanyouhelpCould you check the graph for an equation?
Am I right about the first equation matching the graph of this? Attachment 30545 If not which one does it match?

- Mar 29th 2014, 07:49 PMHallsofIvyRe: Could you check the graph for an equation?
It would help if you would tell us

**why**you think that is the correct response.

But it is easy to see the first one is NOT correct by looking at the point (-1, -1). In fact, you can eliminate all**except**the one correct response by looking at (-1, -1)! - Mar 30th 2014, 07:25 AMcanyouhelpRe: Could you check the graph for an equation?
- Mar 31st 2014, 06:35 AMhollywoodRe: Could you check the graph for an equation?
Are the first and second options actually the same equation?

- Hollywood - Mar 31st 2014, 07:04 AMcanyouhelpRe: Could you check the graph for an equation?
- Apr 1st 2014, 09:17 AMhollywoodRe: Could you check the graph for an equation?
So do you see HallsofIvy's solution now? According to the graph, y'(-1,-1) is positive.

- Hollywood - Apr 1st 2014, 12:22 PMcanyouhelpRe: Could you check the graph for an equation?
- Apr 1st 2014, 06:11 PMhollywoodRe: Could you check the graph for an equation?
That's right. So you would need to look at other points, like say (-1,1).

- Hollywood - Apr 1st 2014, 06:21 PMcanyouhelpRe: Could you check the graph for an equation?
- Apr 1st 2014, 06:23 PMhollywoodRe: Could you check the graph for an equation?
Yes, that's correct.

- Hollywood