Which functions have a positive rate of change and which have a negative rate of change?
Column A Column B
1.
2x − 5y = −15
2.
y = −4x + 9
3.
x y
2 –10
4 –16
6 –22

4.
x y
–3 15
–2 11
–1 7

A.
positive
B.
negative

Question

Which functions have a positive rate of change and which have a negative rate of change?
Column A	Column B
1.
2x − 5y = −15
2.
y = −4x + 9
3.
x	y
2	–10
4	–16
6	–22

4.
x	y
–3	15
–2	11
–1	7

A.
positive
B.
negative

campbell_st · Answer

positive rate of change means positive slope

negative rate of change means negative slope... 

so find the slopes for each

jhonyy9 · Answer

try using what @campbell_st said above

kimberlyevens · Answer

its not for me its for a friend and i want to give her all the steps so she can figure it out

kimberlyevens · Answer

im bad at math so i cant tell her how to do it

kimberlyevens · Answer

@jim_thompson5910

jim_thompson5910 · Answer

Do you know how to solve 2x - 5y = -15 for y? In other words, do you know how to isolate y to get it all by itself on its own side?

kimberlyevens · Answer

no

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

The first thing we do is subtract 2x from both sides

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