1. The graph of the quadratic function f is shown on the grid. What is the y-intercept of the graph of f? * (THE GRAPH LINK BELOW)
https://lh3.googleusercontent. com/N9xvWpbKkKvmTOxew4sj1qNX96o5V1i vjv-8eWLrxZ9rwuXBS0fgy7DAL4b9Kb_90l d6KSXP8Dd-MIMP_488VR8_K_LHcoBO9N=w3 67

y=x+9

?

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

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+

25.45584

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: