Fans & Medals!
Which functions have a positive rate of change and which have a negative rate of change?
1.
2x – 3y = 9
2.
y = −4x + 5
3.
x y
−1 −5
1 1
3 7

4.
x y
1 −2
2 −6
3 −10
A.positive
B.negative

Question

Fans & Medals!
Which functions have a positive rate of change and which have a negative rate of change?
1.
2x – 3y = 9
2.
y = −4x + 5
3.
x y
−1 −5
1 1
3 7

4.
x y
1 −2
2 −6
3 −10
A.positive
B.negative

anonymous · Answer

@Nnesha

anonymous · Answer

@Destinymasha

anonymous · Answer

@Data_LG2

anonymous · Answer

rate is slope, slope is the value of m in y=mx+b 

$\sf \Large m=\frac{rise}{run} =\frac{y_2-y_1}{x_2-x_1}$

For each choices, you have to determine the slope and check whether it is a negative slope or positive slope

anonymous · Answer

For 1, rearrange the equation into the form y=mx+b or evaluating the equation in terms of y

anonymous · Answer

so can you do this for now?

anonymous · Answer

try rearranging the equation into the for y=mx+b

anonymous · Answer

@LOLAri are you doing it?

anonymous · Answer

Yes I got positive for number 1 @Data_LG2

anonymous · Answer

so that is eliminated from your choices, how about the second one? it's already in the form y=mx+b

anonymous · Answer

One minute it took a while for me with the first one sooo lol