How do you find five ordered pairs of y=-2x?

1 Answer
Alan P.
Jul 10, 2015

Pick 5 arbitrary values for #x# and for each #x# value calculate the the y value of the corresponding pair by applying the equation.

Explanation:

For example if we choose as our #x# values:
#color(white)("XXXX")##{ 0, 1, 2, 3, 4}#

For #x=0#
#color(white)("XXXX")##y= -2(0) = 0#
#color(white)("XXXX")##color(white)("XXXX")##rarr# ordered pair: #(0,0)#

For #x=1#
#color(white)("XXXX")##y= -2(1) = -2#
#color(white)("XXXX")##color(white)("XXXX")##rarr# ordered pair: #(1,-2)#

For #x=2#
#color(white)("XXXX")##y= -2(2) = -4#
#color(white)("XXXX")##color(white)("XXXX")##rarr# ordered pair: #(2,-4)#

For #x=3#
#color(white)("XXXX")##y= -2(3) = -6#
#color(white)("XXXX")##color(white)("XXXX")##rarr# ordered pair: #(3,-6)#

For #x=4#
#color(white)("XXXX")##y= -2(4) = -8#
#color(white)("XXXX")##color(white)("XXXX")##rarr# ordered pair: #(4,-8)#

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