Question

If y = 5x − 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, −4), (2, 6), (4, 20)}
{(0, −4), (2, 6), (4, 16)}
{(0, 4), (2, 6), (4, 16)}
{(0, 4), (2, −6), (4, 20)}

Answer 1

Let x = 0, 2, and 4
And then what choice has the correct y-values, that's correct one

Answer 2

for example, if x is 0, the f=5*0-4=-4

Answer 3

If x=0, then y=-4, so c and d are not good answers

Answer 4

x=2, then y[?

Answer 5

y?

Answer 6

2(5)-4=6

Answer 7

if x=4, y=5(4)-4=16

Answer 8

So a is out. What is left?

Answer 9

B?

Answer 10

Yes