Question

Find the range of the function rule y=5x-2 for each domain.
{-1.2, 0, 4}

Answer 1

domain is inputs, input the domain for x
y=5(-1.2)-2
y=-6-2
y=-8

y=5(0)-2
y=0-2
y=-2

y=5(4)-2
y=20-2
y=18

range is {-8, -2, 18}

Answer 2

for x = 0,
we substitute zero into the equation to find its y value like so:

y = 5x-2

y = 5(0)-2

y = -2
There you go.