Pure Year 1 Unit 3

Question 1

What is x is greater than y or x is smaller than or equal to b in set notation?

Answer 1

{x:x is greater than y} u {x:x is smaller than or equal to b}

Question 2

What is x is greater than y and x is smaller than or equal to b?

Answer 2

{x: y is smaller than x which is smaller than or equal to b}

Question 3

Is the circled filled in or empty for x is greater than or equal to y?

Answer 3

filled in

Question 4

Is the circled filled in or empty for x is greater y?

Answer 4

empty

Question 5

Steps to solve a quadratic inequalitie

Answer 5

.solve like a normal quadratic
.draw a graph
.if solving for ax^2 + bx + c is greater than 0 then the answer is the x values above the x axis
.if solving for ax^2 + bx + c is smaller than 0 then the answer is the x values below the x axis

Question 6

is y is greater than f(x) dotted or solid?

Answer 6

dotted

Question 7

is y greater than or equal to f(x) dotted or solid?

Answer 7

solid

Question 8

and

Answer 8

n

Question 9

or

Answer 9

u