Semester 2 Exam Year 9 Flashcards
0
Q
Constant of proportionality
A
K eg: y=kx 12 = 3k K= 12/3 = 4
1
Q
Direct proportions have
A
Straight line with constant gradient
Passes through origin
As value of x-axis ^, value of y-axis ^ also
2
Q
Rule y=kx
A
X & y = quantities and k = gradient
3
Q
Positive and negative slope
A
/ +
\ -
4
Q
Inverse proportion
A
Y = k/x
Graph curve = hyperbola
As x-axis increase , y-axis decrease
Doesn’t go through origin
5
Q
Rate
A
Measures change in 1 quantity with respect to another
6
Q
Constant rate
A
Rate of change not vary
