LINEAR
EQUATIONS
DATA
FINANCIAL
PROBABILITY
100
What is the formula to find the gradient of a straight line?
rise/ run
100
3x = 9
x=3
100
Calculate the mode of the following data;
1 1 3 3 3 6 8 1 2 1
1
100
Sam earns $25 per hour. If he works 32 hours in a week, what is his weekly wage?
32x25= $800
100
What is the sample space of rolling a dice?
{1, 2, 3, 4, 5, 6}
200
State the gradient and y intercept of the line below.
y = 3x +5
m=3
y int = 5
200
5x -1= 94
x=19
200
Calculate the range of;
2 33 34 45 1 5 9
44
200
Sarah earns $13/hour. If gets time and half on Saturdays and double time on Sundays. If she works 22 hours on the weekdays, 4 hours on Saturday and 9.5 hours on Sunday, calculate her weekly pay.
$611
200
Describe the probability of getting a head when tossing a coin.
Even chance
300
Find the gradient of the line below.
-1/2
300
9x -2 = 3x +16
x=3
300
Find the median;
11 11 14 15 15 16 18 19 22
15
300
Patricia earns 10% commission on any property sold. She sells a house for $750 000. Calculate the commission earnt.
$75 000
300
Using the venn diagram below, find the probability of picking a person who likes dogs.
2/5
400
Find the midpoint of the points (1,5) and (7, 3).
(4, 4)
400
Solve for all solutions of x.
x2 + 5x + 6 =0
x= -3, -2
400
Calculate the interquartile range;
1 2 3 3 5 7 7 7 9 12
IQR = 7-3
= 4
400
Holiday loading is 17.5% of 4 weeks of normal weekly pay. If Tim earns $500 per week, calculate his holiday pay.
$350
400
State the probability of selecting an ace from a standard deck of cards. Express in simplest form.
1/13
500
Find the distance between the points (2,5) and (5, 9).
5 units
500
Solve for all solutions of x.
x2 = 100
x = 10, -10
500
There are four numbers of 500, 600, 550 and 700. A fifth number is added and this changes the mean to be 490. Find the missing number.
490
500
Mel invests $1000 and it grows at 6% per annum. Calculate the simple interest earnt after 3 years.
$180
500
Beatrice has bag with a red, green and blue marble. She picks 2 marbles with no replacement. Draw a tree diagram showing this information.
Refer to teacher.