Question

Please need help you know this

Answer 1

Rule: Output = 2 * input + 1

Right blank: Output = - 1

Left blank: Input = 4

Explanation:

Rule

Start with the rule

Output = 2 * input + 1

Let the output = y

Let the input = x

y = 2x + 1

Now

Right Blank

x = - 1

y = 2*-1 + 1

y = -2 + 1

y = - 1

That's the output for -2

Left Blank

The second blank asks you to solve for the input (x) The output (y) is 9

9 = 2x + 1 Subtract 1 from both sides

9-1 = 2x Combine

8 = 2x Divide by 2

8/2 = 2x/2

x = 4