Unit 2 Review

Front

What does a solid line on a graph of an inequality indicate?

Back

It indicates that the inequality includes the boundary line, meaning the symbol has 'or equal to.'

Front

What transformation occurs when f(x) = x is replaced with 2f(x)?

Back

A vertical stretch by a factor of 2.

Front

How do you write the equation of a line parallel to y = -1/2x + 3 that goes through the point (4, -1)?

Back

y + 1 = -1/2(x - 4) is the equation of the parallel line.

Front

Which point is NOT part of the solution set for the inequality? (0, 0), (-10, -10), (-1, 5), (5, 20)

Back

(-10, -10) is NOT part of the solution set.

Front

What is the equation representing the total cost of a holiday meal for x people, given a cost of $12.50 per person and a $30 delivery fee?

Back

y = 12.50x + 30.

Front

What does the symbol '>' mean in an inequality?

Back

It means 'greater than' and does not include the boundary.

Front

What is the effect of multiplying a function by a factor greater than 1?

Back

It results in a vertical stretch of the graph.

Front

What is the slope of a line parallel to y = 3x + 2?

Back

The slope is 3.

Front

How do you determine if a point lies on the line represented by an equation?

Back

Substitute the x-value into the equation and see if the resulting y-value matches.

Front

What does a dashed line on a graph of an inequality indicate?

Back

It indicates that the inequality does not include the boundary line.