Slope Intercept Equations of Parallel Lines

Why will these graphs never cross?

• They have the same y-intercept.

• They have the same slope.

• They are both lines.

• They are both positive slopes.

How many solutions?

• One Solution

• No solution

• Infinitely Many Solutions

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. 

How many solutions?

• 1 Solution

• 2 Solutions

• No solutions

• Infinite solutions

A line is parallel to y = 5x - 17. What is the slope of the parallel line?

• -17

• 5

Find the slope of a line parallel to the line below.
y = 2x + 4

• 2

• -1/2

• 1/2

• -2

Find the slope of a line parallel to the line below y = ½x + 4

• 1/2
  

• -1/2

• 2

• -2

What slope is parallel to:  
m = 4

• 4

• -1/4

• -4

• 1/4

Slopes of parallel lines are...

(a)  

• the same.

• opposite reciprocals.

• always negative.

• reciprocals.

Mathematical Equivalence

ON

Tags

linear point-slope form

parallel