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figure a,c, and d are all polygons.
a polygon is a closed figure with a finite number of straight sides and angles. since figure b has rounded sides and only one angle, it does not classify as a polygon.
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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.
30. 25÷5 = 10÷2
31. 3×3 = 6+3
33. 13+19 = 8×4
34. 14-2 = 6×2