If a line is horizontal, then what is it's slope?

The slope is slanting up from left to right.
You can not determine without knowing two points on the line.
The slope is undefined.
The slope is zero.

Slope-intercept form of the equation of a line ( y = mx + b ) is best used when...

solving systems of equations
you are determining the equation of a line from two given points
graphing lines
you are plotting points

All points in the first quadrant of the Cartesian Coordinate Plane have...(Choose all correct answers)

positive y coordiantes
positive x coordinates
negative x coordiantes
negative y coordiantes

A vertical line lies in the first and fourth quadrants?

Sometimes True
Always True
Never Ture

Which of the folling is an equation written in standard form?

y = -x + 5
-3x - 4y = 1
y = 2x - 1
5x - 2y = 4

Standard Form of an equation of a line ( Ax + By = C ) is best used when...

trying to write the equation of a line given the slope and a point on the line.
graphing lines.
plotting points.
solving systems of equations.

A vertical line has what kind of slope?

Negative.
Undefined.
Positive.
Zero.

Lines with zero slope...(Choose all correct answers)

are vertical lines
have an x-intercept
will lie in the first and second quadrants OR the third and fourth quadrants
will line in the second and third quadrants OR the first and fourth quadrants.
are horizontal lines
have a y-intercept

A vertical line has no x-intercept?

Sometimes True
Always True
Never True

All of the points in the II quadrant of a Cartesian Coordinate Plane have the following: (Choose all correct answers)

y-coordinates are negative
have negative slope
x-coordinates are positive
y coordinates will be positive
have positive slope
x-coordiantes will be negative

Which of the following do you need to have to graph a line? Choose all that are correct.

You can not graph the line.
The y-intercept of the line.
The slope and one point on the line.
Two points on the line.
The x-intercept of the line.

If a line has positive slope, then how does it slant?

The line falls from left to right.
The line is vertical.
The line is horizontal.
The line rises from left to right.

When you are given the slope and the y-intercept of a line, you can easily write the equation of the line in...

slope-intercept form
in vertical line form
x-intercept form
standard form

A line has an x-intercept.

Sometimes True
Never True
Always True

A line with negative slope falls from left to right.

Always True
Sometimes True
Never True

If a line has positive slope it... (Choose all correct answers)

rises from left to right
is a vertical line
only has an x-intercept
falls from left to right
it has an x and y intercept.
only has a y-intercept

Where does a vertical line cross the y-axis?

It crosses the y-axis at the origin.
It does not cross the x-axis.
A vertical line does not cross the y-axis.
It crosses the y-axis at every point.

Slope is... (Choose all correct answers)

Always positive.
rise over run.
run over rise
Difference in the x's over the difference in the y's of two points on the line.
Difference in the y's over the difference of the x's of two points on the line.

The point (-3, -5) lies in which quadrant?

III
I
IV
II

When writing the equation of a line in slope-intercept form ( y = mx + b ), the slope is positive.

Always True.
Never True.
Sometimes True.

The point (2, -3) lies in which quadrant?

IV
III
II
I

When writing the standard form of an equation of a line ( Ax + By = C ), the coefficient of the x term must be positive.

Always True
Never True
Sometimes true

What is an x-intercept?

The point where a line crosses the x-axis.
The amount of slant of a line.
The point where a line crosses the y-axis.
The point that causes the slope of a line to be positive.

What is a y-intercept?

The slope of a vertical line.
Point where a line crosses the y-axis.
The point where a line goes through the origin.
Point where a line crosses the x-axis.

When a line ONLY crosses the x axis...(Choose all correct answers)

it has positive slope.
it is a horizontal line.
it is a vertical line.
it has zero slope.
it has undefined slope.