Question

Graph the function y = x^2 - 9. How many solutions are there?


No Solution


Infinite solutions


Two Solutions


One Solution

Answer 1

What can x equal?

Answer 2

It's quadratic (Degree 2). Without any other information or restriction, there are 2.

Answer 3

I don't think so

Answer 4

i got no solutino

Answer 5

Yes degree 2, with y-intercepts easy to calculate using `a²-b²=(a-b)(a+b)`

You should listen to tkhunny, he is very knowledgeable !

Answer 6

If it is intended that we use the Real Numbers, and actually draw the graph on an x-y coordinate plane, then we have:

x^2 - 9 = 0 ==> (x+3)(x-3) = 0 ==> x = 3 or x = -3

I count two solutions.

Answer 7

y = 2x^2 + 1 what about this one?

Answer 8

Again, that depends on the rules that you haven't told us.

Real Numbers? No solution. You can use the Quadratic Formula.

Answer 9

imaginary solush :)