Maths TERM 4 REVISION

Question 1

What is the formula for calculating the GRADIENT of a line

Answer 1

m = rise over run

Question 2

What is the formula for calculating the equation of a line

Answer 2

y = mx + c

m = gradient
c = y-intercept

Question 3

How do I solve an equation using a graph (on a cartesian plane)

Answer 3

The number after the equals sign (e.g. 2x+3 = 4) is the y value, so I just find the x value for the y value.

Question 4

For indices problem solving, how do I make a formula?

Answer 4

Starting number, multiplied by the amount it changes by, to the power of the time period

Question 5

What do I need to remember for solving inequalities?

Answer 5

when multiplying or diving by a NEGATIVE number, REVERSE the inequality symbol

Question 6

What does the closed and open circles at the end of a line above a number line mean?

Answer 6

Open circle (not coloured in): the number beneath it is excluded from the range

Closed circle: The number below it is INCLUDED the range

Question 7

what is the correct abbreviation for hours

Answer 7

h

Question 8

what is the correct abbreviation for minutes

Answer 8

min

Question 9

what is the correct abbreviation for seconds

Answer 9

s