3 - Equations And Inequalities

Question 1

What two ways can you solve a simultaneous equation

Answer 1

Substitution or elimination

substitution - replace 1 of the values

Question 2

If two lines are placed on a graph where would the solution to their simultaneous equations be

Answer 2

the point where the two lines intersect

Question 3

how do you show a > or < on a number line

Answer 3

draw an arrow without shading the circle at the start

Question 4

How do you show ≥ or ≤ on a number line

Answer 4

Draw the arrow and shade in the circle

Question 5

How do you write set notation for inequalities

Answer 5

{x : x ≤ a} U {x : x ≥ b}

Question 6

What do the u and n symbols mean in set notation

Answer 6

u = union = or

n = intersection = n

Question 7

If the quadratic inequality is > 0 is the inequality written as 1 or 2 statements

Answer 7

it is written as two (in set notation u is used)

Question 8

If the quadratic inequality is < 0 is the inequality written as 1 or 2 statements

Answer 8

It is written as one statement

Question 9

When drawing a line and the > or < symbol is used is the line dotted or straight

Answer 9

dotted

Question 10

When drawing a line and the ≤ or ≥ symbol is used is the line dotted or straight

Answer 10

straight