writing linear equations

Which of the equations are horizontal lines? Select all that apply.

• $y=x$

• $x=5$

• $x=-8$

• $y=1$

• $y=-9$

What information is enough to be able to graph a line?

• two points

• slope and y-intercept

• x- and y-intercepts

• a point and a dream

Find the slope of the line.

• 1/4
• -1/4
• -4
• 4

Tags

CCSS.8.EE.B.5

Write a linear function that has a slope of -2 and passes through the point (-3, 4).

• f(x) = -2x - 2

• f(x) = -2x + 4

• f(x) = =2x + 3

• f(x) = -2x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write the equation of the line.

• y = -2/3x + 4
• y = 2/3x + 4
• y = 3/2x + 4
• y = -3/2x + 4

Write the equation for the line.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Graph  $x=-2$  

• 
• 

Jenny writes the equation y = 1/2x +5.
Why is she incorrect?

• The slope is -2, the equation should be
  y = -2x + 5
• The y-intercept is 4, the equation should be y = -2x + 4
• The slope is -1/2, the equation should be
   y = -1/2x + 5
• The y-intercept is -5, the equation should be y = -2x - 5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write the equation of the graph.

• $y=3x+1$

• $y=-3x+1$

• $y=\frac{1}{3}x+1$

• $y=-\frac{1}{3}x+1$

In slope-intercept form, write the equation of the line passing through the points (-4,1) and (-3,2).

• a
• b
• c
• d