given equation is :
y=mx+b is slope-intercept form of equation of a line where m denotes slope and b denotes y-intercept.
we have to transform given equation into slope intercept form.
adding -2x to both sides of above equation,we get
dividing by -4 to both sides of above equation,we get
-4y / -4=(-2x-8) / -4
y= 1/2x+2 is slope intercept form of given equation where slope is 1/2 and y-intercept is 2.
y-intercept is a point where x is zero.
hence ,(0,2) represents the y-intercept of given equation.
the awnser is 13.50 : )
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circumference of full circle = 2 pi r = 2 pi (15) = 30 pi. as a circle contains 360 degrees, 120 degrees is one third of the circle and subtends an arc of
(30 pi)/3 = 10 pi