## anonymous 3 years ago Rate of change help?

1. anonymous

I need help with part c.

2. anonymous

$\frac{ Y2-Y1 }{ X2-X1}$ Can you find two coordinates on the line? (x1,y1) and (x2,y2)

3. anonymous

So, 25 would be Y, and 3 would be x?

4. anonymous

Yeah that's one point! Another point is (0,0) right?

5. anonymous

Now use those two coordinates to find the rate of change using the formula above.

6. anonymous

Yeah, so $\frac{ 25 - 0}{ 3 - 0 } = \frac{ 25 }{ 3}$

7. anonymous

Perfect, good job :)

8. anonymous

Thanks, so is that the answer or is it 8.333...?

9. anonymous

Fractions are generally more accurate than decimals, but it depends what your teacher is asking for. If in doubt, keep it as a fraction!