For each equation, determine whether and are directly proportional (that is if the equation shows direct variation). If so, then find the constant of proportionality (the constant of variation).

(a) 1/8 - 5x = y
Proportional or Not proportional
Constant of proportionality: k= ___

(b) y = 4x
Proportional or Not proportional
Constant of proportionality: k= ___

y > 1/3x

y < = -x + 4

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step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: