Graphing Line from Slope Intercept

Which graph represents y = 3x?

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When graphing from slope-intercept form ( y = mx +b), first you graph the ______ value on the ________________.

• m value on the y-axis

• m value on the x-axis

• b value on the y-axis

• b value on the x-axis

Which could be the graph of the equation y = 1/3x - 2?

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In slope-intercept form, what does the m represent?

( y = mx + b)

• mountains

• Slope

• y-intercept

• mixed up

Answer explanation

We often think of m (slope) telling us how to "move" on the line! Rise over run!

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

In slope-intercept form, what does the b represent?

( y = mx + b)

• blah blah blah

• bend in the graph

• y-intercept

• slope

Answer explanation

We often think of b (y-intercept) telling us whter the graph "begins" on the y-axis! The value of y when x =0!

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the slope of the line? (pay attention to the direction of the slope or in what direction you move for the sign of the slope!)

• -2

• 2

• -1

• 1

Tags

CCSS.8.EE.B.5

Why do we want to think of slope as a fraction?

• rise/run or change in y over change in x

• run/rise or change in x over change in y

• Fractions make things better

• Because running makes the problem go faster!

Tags

CCSS.8.EE.B.5

Which could be the graph of the equation y = 2/3x - 4?

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Which is the graph of the equation y = -2x + 1?

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What are the steps for graphing a line?

• Plot y-intercept
  count slope ratio plot second point
  Draw the line.

• Make a table
  Plot slope
  Draw line

• Plot two points
  Check slope
  Draw line

• Draw line
  Hope it is right