## anonymous one year ago Find the x- and y- intercepts of the graph of y=\sqrt{7 x + 9}. If some solution does not exist, type N for both coordinates.

1. anonymous

Well, the y-intercept has an x-coordinate of 0. So what do you get for y when x=0?

2. anonymous

wouldnt y be also 0?

3. anonymous

$y=\sqrt{7(0)+9} = ?$

4. anonymous

3

5. anonymous

Correct. That's the y-intercept. Now, the x-intercept has a y-coordinate of 0. So set y=0 and solve for x,$0=\sqrt{7x+9}$

6. anonymous

-9/7

7. anonymous

Well done. That's the x-intercept.

8. anonymous

thanks!

9. anonymous

You're welcome