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 book shelf arrived at the wholesale price = $ 147
mark up on the furniture = 60 %
so the cost price = $147
markup = 60% = 0.60
so using the formula
sale price = cost price + cost price * markup percentage
sale price = 147 + 147*(0.60)
sale price = $ 235.20
9d = –5.4
divide each side by 9
9d/9 = –5.4/9
a. x - 81 = 0
b. x + 10 x2 + 25...