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Gnom [1K]
3 years ago
14

If f(x) = 2x² then when x = 3, y will equal

Mathematics
1 answer:
USPshnik [31]3 years ago
3 0

Answer:

y = 18

Step-by-step explanation:

Given

f(x) = 2x² ( substitute x = 3 )

y = f(3) = 2(3²) = 2(9) = 18

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What is the equation of the line that passes through the points (−2, 1) and (1, 10)? 3x − y = −73x − y = −53x − y = 5x + 3y = −5
djyliett [7]

The two point formula :

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

The points are (-2, 1) and (1, 10)

Using the formula above :

\begin{gathered} y-1=\frac{10-1}{1-(-2)}(x+2) \\ y-1=\frac{9}{3}(x+2) \\ y-1=3(x+2) \\ y-1=3x+6 \\ -3x+y=6+1 \\ -3x+y=7 \\ 3x-y=-7 \end{gathered}

The answer is 3x - y = -7

7 0
1 year ago
Worth 10pts!!! Can someone help?
gulaghasi [49]

Answer:

-4

Step-by-step explanation:

The average rate of change of the interval [a,b] is (f(b)−f(a)) / (b−a)

Replacing a=−5, b=4, f(x)=−x^2−5x+12.

 (f(b)−f(a))/(b−a) =12−5x4− 4^2 − (12−5 x(−5)−(−5)^2)/ (4−(−5))= −4.

3 0
3 years ago
S a point of the circle <br> True<br> False
Law Incorporation [45]


The answer is true I have had this question before
5 0
3 years ago
Read 2 more answers
If CD has endpoints (–3, 4) and (5, 2), what are the coordinates of its midpoint?
Aleks [24]
You can read it of the graph which is (1,3) or also calculate it with vectors:

calculate the vector CD:
(5-(-3),2-4)=(8,-2)
to calculate the midpoint you need half of the vector length:
(8,-2)/2=(4,-1)
add the vector to C:
(-3,4)+(4,-1)=(1,3)=midpoint of CD

so it's the third option
5 0
3 years ago
Could I get help with this ?
Leokris [45]

Answer:

top is -2,4 and bottom is 3,-2 ??

hope that what u need

Step-by-step explanation:

???

7 0
3 years ago
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