Slope-Intercept Equations Graphs

Give the equation for the graph

• y = 5x - 3

• y = 4x + 2

• y =-2x + 5

• y = - 2x + 4

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined

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.

What is the slope of the equation?

y = -2x - 1

• 2

• -2

• -2x

• -1

Find the slope and y - intercept

y = -1 + 3x

• slope: 3 y-intercept: -1

• slope: -1 y-intercept: 3

• slope: 3x y-intercept: 1

• slope: -1 y-intercept: 3x

How many solutions?

• One Solution

• No solution

• Infinitely Many Solutions

If a system of linear equations has one solution, what does this mean about the two lines? 

• Parallel lines

• the same line 

• Intersecting lines

This system has _____ solutions

• no

• 1

• 2

• Infinitely many

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. 

• 1 solution

• 2 Solutions

• No Solution

• Infinite Solutions