11 minus what number is 7
1 answer:
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Answer:
y=0.012x+0.65
Step-by-step explanation:
And again y=mx+c
we have 4 point given in the question
(50,1.25) ( 100,1.85) ( 150,2.45) (200,3.05)
we can find the M ( gradient/Slope) by using 2 of them with the formula
I am using the first 2 (50,1.25) ( 100,1.85)
which in decimal form is 0.012
with that cross out the first option as its wrong
now to find c, like in the previous two question, put the m, x and y in the equation and solve for C
I am gonna use the 3rd coordinates for this one (150,2.45)
2.45=0.012(150)+c
2.45=1.8+c
0=1.8-2.45+c
-c=-0.65
c=0.65
So our completed equation is y=0.012x+0.65
The third answer is correct :)
Step-by-step explanation:
The derivative of log is
You can easily derive this using the Change of base rule, and natural log rules
Next, we differentiate with respect to x.
So back to the topic at hand,.
a=7, so we get
We plug in 0, we would get undefined