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19 votes
What is the rate of change of the function y= -1/2x+4

User Sevcsik
by
8.2k points

2 Answers

2 votes

Answer:

-1/2 is the rate of change.

Explanation:

The x and y values change whenever you multiple the x value by -1/2.

User Lidakis Manolis
by
8.1k points
7 votes

Answer:

y

=

m

x

+

b

m

= slope

b

= y-intercept (where the line crosses the x-axis)

go up to

4

on the

y

axis (4,0). That is one of the points. From that point, which is

(

4

,

0

)

, use the slope and graph the next point, so the slope is

m

, which is

1

2

. The numerator ("

1

") states how much you go up or down (positive (+) up, negative (-) down). so in this case, you go up one on the y-axis. Then from that point go

2

points to the right (you get this from the denominator of

1

2

) if there is no denominator (ex: y=5x+1), there is always a

1

underneath every number (

y

=

5

1

x

+

1

)

Explanation:

User Dan Croak
by
7.8k points

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