HELP I don't understand this n
Which functions have a positive rate of change and which have a negative rate of change?
choices a positive and b negative

2x − 5y = −15
x y
2 –10
4 –16
6 –22

x y
–3 15
–2 11
–1 7
which is positive and which is negative

Question

HELP I don't understand this n
Which functions have a positive rate of change and which have a negative rate of change?
 choices a positive and b negative


2x − 5y = −15
 x      y 
2    –10 
4    –16 
6    –22 

  x     y 
–3    15 
–2    11 
–1     7 
which is positive and which is negative

justpeep6 · Answer

new to this so let me know if its wrong never been on here before

welshfella · Answer

rate of change  =  change in value of y  / corresponding change in value of x

welshfella · Answer

so for the second function  it is

-22-(-10) / (6 - 2)

can you work that out?

welshfella · Answer

for the first function first rearrange it to the form

y = mx + c