Question

Which set of output values correctly complete the function table?

y= -4x
Input (x) Output (y)
-6 ?
-2 ?
3 ?

Answer 1

you want to find your output (which is y)
and to find y, you must multiply by the values of x by -4

so all you do here is put the input numbers (which represent x) and substitute that into the x spot to give you y!!

so for -6 this is what you'd do
y=-4x
x=-6
y= -4(-6)
=24 (because remember, when multiplying, 2 -'s make a +)

for -2 it's the same thing
y=-4x
x=-2
so y= -4(-2)
=8

for 3 also,

y=-4x
x= 3
y=-4(3)
= -12

Hope that makes sense :) !