Graphing Lines in Slope Intercept Form

Parallel Lines never intersect because...

• they have the same slopes. 

• they have the same y-intercept.

• they have different slopes.

• they have different y-intercepts. 

When you graph the exact same equation twice,

• you will have no solution. 

• you will have one solution.

• you will have infinite solutions. 

• you will graph a giraffe. 

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

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

• none

• y=2-4x

• y=4x+2

• y=4x-8y

What do you do first to graph a line from slope-intercept form?

• Use b to make the y-intercept

• Use m to make the y-intercept

• Use b as the slope to make the next point

• Use m as the slope to make the next point

What do you do second to graph a line from slope-intercept form?

• Use b to make the y-intercept

• Use m to make the y-intercept

• Use b as the slope to make the next point

• Use m as the slope to make the next point

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

This system has _____ solutions

• 0

• 1

• 2

• Infinitely many

• y= -1x-3
• y= -3x-1
• y=(-1/3)x-1
• y= -3x-3

What is the solution to the system?

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)