SOLUTION: Fine y=x2-x-2 and plot the graph and y and x values.

Algebra ->  Coordinate-system -> SOLUTION: Fine y=x2-x-2 and plot the graph and y and x values.      Log On


   

Question 983839: Fine y=x2-x-2 and plot the graph and y and x values.
Found 3 solutions by ikleyn, solver91311, josgarithmetic:
Answer by ikleyn(52786) About Me  (Show Source):
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!



Fine ? What for? Speeding? Failure to Yield? Littering?

Which x and y values? The set of ordered pairs has infinite elements.

John

My calculator said it, I believe it, that settles it

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
y=%28x%2B1%29%28x-2%29

You can make a table of a few x y values; and get the zeros from the factors of y.
Zeros for y are x=-1 and x=2. The vertex occurs at %28-1%2B2%29%2F2=1%2F2; at which y=%281%2F2%2B1%29%281%2F2-2%29=%283%2F2%29%28-3%2F2%29=-9%2F4 which is also -2%261%2F2. Vertex ( 1/2, -9/4 ).

graph%28300%2C300%2C-3%2C5%2C-4%2C4%2Cx%5E2-x-2%29