Question

You can verify the zeros of the function by using a graph and finding where the graph
y=x^+6x-7

A. is at a minimum
B. is at a maximum
C. crosses the x-axis
D. crosses the y-axis

Answer 1

was there supposed to be something after the x ?

y=x^?????+6x-7

Answer 2

^2

Answer 3

http://www.wolframalpha.com/input/?i=plot+y%3Dx^2%2B6x-7
plot the graph ...
if you don't want, put y=0 and find the root's of the rest ... check if they are equal or real and different or imaginary

Answer 4

here's your graph. http://www.mathway.com/graph_image.aspx?p=y=x^2+6x-7?p=520?p=450?p=False?p=False?p=False?p=False?p=True?p=True?p=True?p=True?p=?p=?p=?p=?p=4

Answer 5

x^2+6x-7 = 0 , find x ... http://www.wolframalpha.com/input/?i=0%3Dx^2%2B6x-7

you can check the nature of roots by it's determinant
6^2 - 4 (1) (-7) > 0 ... which means you have two distinct roots => crosses y axis!!

Answer 6

A sexy person asking a math question... rare.

Answer 7

ahhahah

Answer 8

download a great graphing/geometry package called geogebra

http://www.geogebra.org/cms/

it will meet all your graphing needs

Answer 9

put y = 0 to find the points where it crosses x axis

Answer 10

Else plot the parabola to check your answers