Which of the following shows the direct variation relationship shown in the graph?

A graph shows a line connecting the points negative one comma four and zero comma zero.

y equals negative four x

y equals negative x

y equals negative zero point two five x

y equals x minus four

Question

Which of the following shows the direct variation relationship shown in the graph?

A graph shows a line connecting the points negative one comma four and zero comma zero.

y equals negative four x

y equals negative x

y equals negative zero point two five x

y equals x minus four

anonymous · Answer

???????????

anonymous · Answer

you need to use the equation y = mx + b
where m is the slope and b is the y-intercept.
Since, this line intersects the y axis at 0, there is no + b part of the equation.
now you need to find the slope, so remember
rise/run
you go down 4 units and go right 1 unit, so your slope is -4
now plug that into the equation and you get
y = -4x