Pre Algebra Review

What is the y-intercept in the equation y=mx+b?

• The value of y when x=0, represented by 'b' in the equation.

• The slope of the line represented by 'm'.

• The point where the line crosses the x-axis.

• The maximum value of y in the equation.

What is the equation of a vertical line passing through the point (4, 5)?

• x = 5

• y = 4

• x = 4

• y = 5

What is a function?

• A function is a relation where each input has a unique output.

• A function is a type of equation that cannot be graphed.

• A function is a relation when the domains (x-values) are used once.

• A function is a collection of random numbers.

How can you determine if a relation is a function from a set of ordered pairs?

• A relation is a function if no two ordered pairs have the same first element (x-value).

• A relation is a function if all ordered pairs have different second elements (y-values).

• A relation is a function if it contains at least one ordered pair.

• A relation is a function if the first elements are all unique but the second elements can repeat.

3 inches

4 inches

5 inches

Which represents the hypotenuse?

• 3 inches

• 4 inches

• 5 inches

• 6 inches

Range

Output

Dependent

• X

• Z

• Y

• W

Is the graph of a vertical line a function?

• Yes, it is a function because it passes the vertical line test.

• No, it is not a function because it fails the vertical line test.

• It is a function only if it is a straight line.

• It can be a function depending on the context.

What does it mean if two lines are parallel?

• Two lines are parallel if they have the same slope but different y-intercepts.

• Two lines are parallel if they intersect at a right angle.

• Two lines are parallel if they have different slopes and the same y-intercept.

• Two lines are parallel if they are on the same plane.

When graphing the equation: y = 2x + 7, what is the first step?

• Plot the 7 on the y-axis (0 , 7)

• Plot the slope of 2

• Find the x-intercept

• Draw a line through the origin

What does 'm' represent in the slope-intercept form of a line (y=mx+b)?

• The y-intercept of the line.

• The slope of the line.

• The x-intercept of the line.

• The length of the line segment.