Substitute in x=-2,-1,0,1, and 2 for x and find the values of y. List the ordered pairs. y=(1/2)x^2-3

Question

please help

Answer 1

Simply plug in each value of x and compute the corresponding value of y:

 

    x       y

   -2     -1
   -1     -2.5
    0     -3
    1     -2.5
    2     -1

 

Note:  we usually express ordered pairs like (x,y), so these would be:

   (-2,-1)

    etc.