Coordinate Planes and Line Graphs

In the ordered pair (4,9), which number is the y-coordinate?

• 4

• 9

• neither

• both

When plotting points in a coordinate plane, which directions should you go first? Then what direction should you go second?

• right then up

• up then right

• down then right

• diagonal 

Which axis runs horizontally?

• x

• y

The horizontal axis of a line graph is called the __________.

• slope

• line of best fit

• x-axis

• y-axis

The line pictured has a(n) ______ slope.

• Undefined

• Zero

• Positive

• Negative

The line pictured has a(n) ______ slope.

• Undefined

• Zero

• Positive

• Negative

The line pictured as a(n) ______ slope.

• Positive

• Negative

• Zero

• Undefined

What is the slope of the line?

• 2/4
  2/4

• 1/2

• 4/2

• 2/1

Find the slope of the line.

• 1/2

• -1/2

• 2

• -2

• 2,6
• 6,2