Question

graph the function g(x)=-x^2-3x+7. Find the area under the curve for the domain –4 £ x £ 1.

Answer 1

Well, it is a parabola that is upside down somewhere... I would factor it, set it equal to zero to find the x-intercepts. I might also find -b/(2a) and g(-b/(2a)) to find the vertex... then draw it.

Are you using calculus to find the area under the curve?

Answer 2

It says to use a graphing calculator. The class is suppose to be alg 2 but there's a lot of trig and precalc

Answer 3

Ah, it doesn't factor nicely... but the quadratic formula.... never mind... the calculator will do nicely too. Do you have a TI?

Answer 4

and the possible answers are
a. 71.6 sq units
b. 46 sq units
c. 35.83 sq units
d. 17.916 sq units

Answer 5

whats TI?

Answer 6

Graphing calculator from Texas Instruments.

Answer 7

No I don't have one which makes things difficult :(

Answer 8

If you're on a computer pull up your calculator off the computer and press view or edit and the scientific calculator should be a option.

Answer 9

Yeah, hmmm... you may be able to find an application on the web that can do it. Like Wolfram Alpha... but I'll put it in my calculator.

Answer 10

Scientific is nice, but we need graphing to calculate area under a curve. I don't think that mine does that.

Answer 11

@ILoveMath3006 Macbook's just have the simple calculator. :(

Answer 12

Ok. I type the function into my calculator and graph it.

Answer 13

It's a gross drawing, but it is an upside down parabola that looks a little like this.