03 Equations of inequality

Question 1

What does it mean if the discriminant is bigger than 0 when finding intersection points?

Answer 1

there are 2 intersection points.

Question 2

What does it mean if the discriminant is equal to 0 when finding intersection points?

Answer 2

There is 1 intersection point.

Question 3

What does it mean if the discriminant is less than 0 when finding intersection points?

Answer 3

There are no intersection points.

Question 4

How do you start a set notation bracket?

Answer 4

x:

Question 5

What you use to connect 2 set inequalities that don’t overlap when using set notation?

Answer 5

the ‘u’ shape.

Question 6

What steps do you follow when solving a quadratic inequality?

Answer 6

1- set it equal to 0
2- solve quadratic to find critical values
3- draw graph
4- use graph to get final answer

Question 7

What’s the first step of finding the points at which a graph intercepts each other?

Answer 7

Set the equations equal to each other.

Question 8

When finding a region on a graph, should you use dotted or solid lines for the symbols ‘>’ and ‘<‘?

Answer 8

Dotted lines.