The equation y = 4x + 4 describes the relationship between the quantities x and y. are the quantities in a proportional relationship? a) yes, because the graph of the equation is a straight line. b) no, because the graph of the equation is not a straight line. c) yes, because the graph of the equation passes through the origin. d) no, because the graph of the equation does not pass through the origin.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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