How do you graph y=3-xy=3x?

1 Answer
Jul 30, 2017

See a solution process below:

Explanation:

Substitute some points for xx to obtain corresponding values for yy. Such as:

x = -10x=10 Then y = 3 - -10 = 3 + 10 = 13y=310=3+10=13 gives: (-10, 13)(10,13)

x = -5x=5 Then y = 3 - -5 = 3 + 5 = 8y=35=3+5=8 gives: (-5, 8)(5,8)

x = 0x=0 Then y = 3 - 0 = 3y=30=3 gives: (0, 3)(0,3)

x = 5x=5 Then y = 3 - 5 = -2y=35=2 gives: (5, -2)(5,2)

x = 10x=10 Then y = 3 - 10 = -7y=310=7 gives: (10, -7)(10,7)

Now, plot the points and draw a line through the points:

graph{y = 3 - x [-20, 20, -10, 10]}