Which equation has a y-intercept at (0,3) and a x-intercept at (-4,0)
1 answer:
Using the two coordinates you can find the equation
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Find slope first
Slope
0 - 3 = -3
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-4 - 0 = -4
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Simplify -3/-4
3/4
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Your slope is 3/4 and the Y-intercept as mentioned in the question is "3"
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So your equation is y = 3/4x + 3
------------------------------------
Find slope first
Slope
0 - 3 = -3
-------
-4 - 0 = -4
--------------------------------------------------
Simplify -3/-4
3/4
-----------------------------------------------------------
Your slope is 3/4 and the Y-intercept as mentioned in the question is "3"
----------------------------------------------------------------------
So your equation is y = 3/4x + 3
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Answer:
2.17ft/s
Step-by-step explanation:
Look at the sketch of ladder at the beginning and after 3 seconds it starts to fall,
Distance of ladder from the wall 3 seconds after ladder starts to fall = Initial distance+ Velocity× time
= 6 + 2×3
= 12ft
Use trignometry to find out the speed of the top of ladder
cosθ= 12/20
θ= 0.825 rad
tan θ= v/2
v= 2.17ft/s
