(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Quadratic Equations and Inequalities question about properties of quadratic

so here is the question

graph the function. state the domain and range of the function.

F(x)=-2x^2-3x+2

i try and use the axis of symmetry (-b/2a) and then plug that into the original formula to get the vertex.

i keep getting F(-3/2)=2

but then when i try and plug in numbers into the formula there scattered everywhere

F(-3/2)=2 is the vertex in the graph but i cant find the other points to show where the parabola is going

i tried -1/2, 0, -2 and got

(-1/2,3)

(0,-3)

(-2,0)

please help me out.

its supposed to be a upside down parabola with a domain of all real number and a range of {y|y<_ 25/8}

<_ = less than or equal to.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Quadratic Equations and Inequalities question about properties of quadratic

**Physics Forums | Science Articles, Homework Help, Discussion**