Linear Equation Slope and Intercept

Slopes of perpendicular lines are...

• opposite reciprocals (flip-flip)

• the same

• opposite

• always 7

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

• y-intercept

• Zero

• x-axis

• They don't have another name

Identify the following as vertical, horizontal or neither

A line that has a slope of zero

• Vertical

• Horizontal

• Neither

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

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 y-intercept in the equation

y= -2x

• -2

• -2x

• 0

• 1

How many solutions?

• One Solution

• No solution

• Infinitely Many Solutions

How many solutions will this system have?

• One

• Two

• No Solution

• Infinitely Many Solutions

If a system of equations has no solution, what does the graph look like?

• intersecting lines

• parallel lines

• skew lines

• intersecting lines