## Math4Life Use the graph to write an equation for the parabola. https://www.connexus.com/content/media/102877-692010-103438-PM-273481182/res00000/ppg/examview/images/mc005-1.jpg one year ago one year ago

1. satellite73

vertex is at the origin so it must be $y=ax^2$ now we need $$a$$ and since it looks like $(4,4)$ i on the graph we know $4=a\times 4^2=a\times 16$ so we get $a=\frac{4}{16}=\frac{1}{4}$ and your equation is $y=\frac{1}{4}x^2$

2. Math4Life

It has to be one of these: y=-x^2/4, y=x^2/4, y=x^2/2, or y=2x^2

3. Math4Life

@satellite73 ^^^^^^^^^^^^^^^^^^^^ above

4. satellite73

yes, it is the one i wrote

5. satellite73

6. Math4Life

@satellite73 no it isn't i just looked

7. Math4Life

@15Trev

8. satellite73

i wrote $y=\frac{1}{4}x^2$ you wrote $y=\frac{x^2}{4}$ po tay to po tah to

9. Math4Life

so its x^2/4?

10. satellite73

yes