Evaluating Graphs and Tables

Evaluating Graphs and Tables

Feb 4, 2021

When using graphs and tables

Remember: graphs have two axes, x and y

X runs left and right

Y runs up and down

Always start with X and move up/down to find Y

When filling in a table using a graph

X is the input value, and y which we now call f(x) is the output value

Use the graph to fill in the table

X is the input, f(x) is the output

If you're given the output move up or down to find the input

Put that number in your table as X

If you're given the input, X, find the output, f(x) value where the graph touches

Multiple Choice

What is the value of "a"?

• 0

• undefined

• picture isn't big enough

• -4

Multiple Choice

What is the value of "b"?

• 0

• -2

• not enough information

Multiple Choice

What is the value of "c"?

• 0

• It's not in the picture

• not enough information

• -1

How to read a table

What is X when G(x) = -6? 6 (which means G(6) = -6, the input is 6 the output is -6)

What is G(3)? Look to the x column, find 3, the answer is the other box. G(3) = -4

Multiple Choice

What is X when G(x) = -12

• 3

• 6

• 9

• 12

• 15

Multiple Choice

What does G(9) = ?

• -4

• -6

• -8

• -10

• -12

Multiple Choice

What does G(12) = ?

• -4

• -6

• -8

• -10

• -12