polancomarina
polancomarina polancomarina
  • 12-08-2017
  • Mathematics
contestada

Which equation represents the graphed function?

y = 4x – 2
y = –4x – 2
y =1/4 x – 2
y = –1/4 x – 2

Which equation represents the graphed function y 4x 2 y 4x 2 y 14 x 2 y 14 x 2 class=

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haleyderf
haleyderf haleyderf
  • 12-08-2017
y=1/4x-2 because the slope is 1/4 and the y-intercept is -2. I used the slope-intercept formula which is y=mx+b where m is the slope and b is the y-intercept.
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apologiabiology
apologiabiology apologiabiology
  • 12-08-2017
they are all in slope intercept form

y=mx+b
m=slope
b=y intercept


so we see that the line crosses the y axis at y=-2
so b=-2

y=mx-2
that is all of them

easiest way next is to find the slope


slope=rise/run

from (0,-2) to (4,-1)
rise is from -2 to -1 or rise of 1
run is from 0 to 4
so rise/run=1/4

y=1/4x-2

3rd option
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