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amandaiscool22
29.06.2019 •
Mathematics
Write the slope-intercept form of the equation for the line.
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Ответ:
y = -
x - ![\frac{3}{2}](/tpl/images/0029/2329/dbf42.png)
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
to calculate m use the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (-4, 2 ) and (x₂, y₂ ) = (4, - 5) ← 2 points on the line
m =
= - ![\frac{7}{8}](/tpl/images/0029/2329/2c64e.png)
y = -
x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (4, - 5), then
- 5 = -
+ c ⇒ c = - ![\frac{3}{2}](/tpl/images/0029/2329/dbf42.png)
y = -
x -
← in slope- intercept form
Ответ:
Step-by-step explanation:
Since these two triangles are similar by AA, the ratio of their corresponding sides must be the same. In other words:
Cross multiply:
Take the square root of both sides:
Hope this helps!