Solve the equation by graphing the related function.

Question

x^2-9=0

I have no idea how to do this. Please help!

Answer 1

corresponding function:

y = x^2 - 9
which is a parabola opening upwards,
centre at (0,-9) and x-intercepts of ±3

I assume you know how to graph a curve like this.

solution : x = ±3

Answer 2

The answers to that assessment are as follows.
1. D
2. A
3. C
4. B
5. C
You're welcome. Don't be an idiot.

Answer 3

i got 10 questions

Answer 4

I have 11 questions

Answer 5

For 10 questions, Unit 4 Quadratic Functions.

1. A. x=+3
2. D. no solution
3. C. x=0
4. B. x=+4
5. C. g=+5/2
6. B. b=+1/2
7. C. p=+12
8. A. z=+3
9. C. no solution
10. A. one solution

Don't listen to Depressed Ford.

Answer 6

someone <3 is right :)

Answer 7

both are right, someone <3 for the practice. and depressed ford for the following quick check.

Answer 8

guys someone<3 is 100% correct for the solving quadratic equations PRACTICE which has 10 questions but for the quick check, depressed ford isn't correct his answers give you a 2/5 40%

Answer 9

@someone<3 is 100% correct thanks

-parkjimin

Answer 10

for the following quick check (Solving Quadratic Equations) the answers are
(Question # - Letter Answer - Answer)
1 | C | +7
2 | D | no solution
3 | B | 12x
4 | B | 4 in
5 | C | 22

give this a thumbs up if it helped you so others know its true! <3

Answer 11

korinthia is right for the quick check

Answer 12

korinthia is right for the quick check