Question

a.
How can the graph for the rule y= 2x+1 be used to predict the result for an
input (x-value) of 7? How can the graph be used to predict the output
(y-value) associated with an input of 3?

Answer 1

Answer:

The result for an input of 7 is: $y=15$

The output (y-value) associated with an input of 3 is: $y=7$

Step-by-step explanation:

The image attached shown the graph for the rule $y= 2x+1$.

In order to use the graph to predict the result for an input value of 7, you need to follow these steps:

- Draw a vertical line from $x=7$

- When the vertical line touches the graph, you must draw a horizontal line to the y-axis to find the y-value.

You can observe in the graph that the result for an input value of $x=7$ is $y=15$

Follow these steps in order to use the graph to predict the output value associated with an input value of 3:

- Draw a vertical line from $x=3$

- When the vertical line touches the graph, you must draw a horizontal line to the y-axis to find the y-value.

You can observe in the graph that the output value associated with an input value of $x=3$  is  $y=7$