Slopes and Intercepts of Linear Graph and Equations

Slopes of parallel lines are...

• opposite reciprocals

• the same

• opposites

• always 7

Tags

CCSS.8.EE.B.5

Slopes of perpendicular lines are...

• opposite reciprocals (flip-flip)

• the same

• opposite

• always 7

Tags

CCSS.8.EE.B.6

What is another name for the x-intercept of a graph?

• y-intercept

• Zero

• x-axis

• They don't have another name

Which statement correctly describes the graph?

• The lines are parallel because they have different slopes.

• The lines are NOT parallel because they have different y-intercepts.

• The lines are parallel since they have the same slope and different y-intercepts.

• The lines are perpendicular.

Which of the following is an equation of a line in point slope form, with a slope of -5 that goes through the point (2, -3)?

• y - 2 = -5(x - 3)

• y + 3 = -5(x - 2)

• y - 3 = -5(x + 2)

• y - 5 = 2(x + 3)

Parallel Lines have equations with equal slopes and different y-intercepts.  TRUE OR FALSE

• TRUE

• FALSE

Given the equations below determine if they are parallel or not.  y = 4x - 2 and   y = 5 + 4x

• Yes, They are parallel

• No, They are not parallel

Tags

CCSS.8.EE.C.8B

Are the following equations parallel or not? HINT: Solve the second equation for y so that it is in y=mx + b form. y = 2x - 5 and 4x + 2y = 10

• Yes, they are parallel

• No, they are not parallel

Tags

CCSS.8.EE.C.8B

Given the equations in point slope form, do the equations form parallel lines? y - 2 = 4(x + 1) and y - 2 = 4(x + 6)

• Yes, they are parallel

• No, they are not parallel

Which set of equations does NOT represent a set of parallel lines? HINT: solve for y where necessary

• y = 2x + 42x - y = 6
  

• y - 3 = 4(x + 3)y = 3x - 2
  

• y - 2 = 6(x + 2)3x + y = 12
  

Tags

CCSS.8.EE.C.8B