Question

what is it asking me to do?Estimate the zeros of the equation by graphing. Round your solutions to the nearest tenth and write them in set form, such as {-1.2,3.4}.
x2 - 12 = 0

Answer 1

what does it mean by estimate the zeros?

Answer 2

Use the polynomial function
y = x^2 - 12
to obtain points.
Then graph the points and read off the graph where the graph crosses the x-axis.
To get points, let x take on several values and calculate y. Write all those numbers in a table, then graph the function using the points on the table.

x | y
--------
0 | -12
-1 | -11
1 | -11
-2 | -8
2 | -8
-3 |
3 |
-4 |
4 |

Fill in the table for x = -3, 3, -4, 4.
Then plot all points.
Then read off the graph where the curve crosses the x-axis.

Answer 3

0,-12?

Answer 4

@math456 ?

Answer 5

(0, -12) is just one point you need to plot, along with all the other points on the table.

Answer 6

i plotted them all the 0,-12 is the vertex