Slope and Equation of the Line

What is the first step in solving a system by graphing?

• Write both linear equations in slope-intercept form

• Get x by itself

• Compare the slopes of both equations

• Write both equations in standard form

Tags

CCSS.8.EE.C.8B

What is the
slope-intercept form
of the equation
-8x+2y=4

• none

• y=2-4x

• y=4x+2

• y=4x-8y

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

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

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

Tags

CCSS.8.EE.B.5

Write the equation in point-slope form of the line that passes through the given point and has the given slope.
(4, -7); m = -1/4

• y + 7 = -1/4(x - 4)

• y - 4 = -1/4(x + 7)

• y + 7 = 4(x - 4)

• y - 7 = -1/4(x - 4)

Given that the slope is  2/3 and the y intercept is -3 what is the equation of the line?

• y = 2/3x - 3

• y = 2/3x + 3

• y = -2/3x - 3

• y = -2/3x + 3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write the equation of the line that has a slope of 3 and passes through (5, 11)

• y = 3x - 4

• y = 3x  - 26

• y = 3x - 38

• y = 3x - 28

Write the equation of the line through the points (4, 5) and (12, 9).

• y = 2x - 3

• y = 1/2x + 3

• y = 1/2x +7

• y = 2x - 15

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2

• -1/2

• 2

• -2

Tags

CCSS.8.EE.B.5

What type of slope?

• undefined

• positive slope

• negative slope

• zero slope

Tags

CCSS.8.EE.B.5