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Marysya12 [62]
2 years ago
15

Let f(x) = x^2 − 5. Find f(-3)

Mathematics
2 answers:
Art [367]2 years ago
8 0

Answer:

f(-3) = 4

Step-by-step explanation:

f(x) = x² - 5

f(x) is a function with input x, meaning it is an expression which has terms involving x;

x is a variable and can be considered a space holder;

f(-3) is the function with input -3, this simply means replacing the space holder, i.e. x, with -3;

f(-3) = (-3)² - 5

f(-3) = 9 - 5

f(-3) = 4

Art [367]2 years ago
5 0

Answer:

f(-3)=4

Step-by-step explanation:

Substitute x=-3 into the function

f(-3)=(-3)^2-5

f(-3)=9-5

f(-3)=4

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PLEASE URGENT HELP!!!
olchik [2.2K]

Answer:

The equation is;

y = 1/3x

Step-by-step explanation:

The equation of a linear model is given as;

y = mx + b

m is the slope while b is the y intercept

As we can see, the y intercept is the origin and that means b is zero

To get the value of m, the slope, we have to use the slope equation

We simply select any two points on the line

We have the points as (6,2) and (15,5)

The equation of the slope is:

m = (y2-y1)/(x2-x1)

(x1,y1) = (6,2)

(x2,y2) = (15,5)

m = (5-2)/(15-6) = 3/9 = 1/3

So the equation will be;

y = 1/3x

3 0
3 years ago
Find the values of x and y - i will give brainliest if right
kherson [118]

Answer:

itd x=68 and y=5 I apolgize if its wrong

4 0
3 years ago
A student writes the equation for a line that has a slope of -6 and passes through the point (2, –8).
Ilia_Sergeevich [38]

Answer:

The error in the students work is

y -(-8) + 8 = -6x + 12 + 8

subtracting a negative is adding

y+8

They should subtract 8 from each side instead of adding 8 to each side

Step-by-step explanation:

We can use point slope form since we are given a point and the slope

y-y1 = m( x-x1)

y--8 = -6(x-2)

y+8 = -6(x-2)

Distribute the -6

y+8 = -6x+12

Subtract 8 from each side

y+8-8 = -6x+12-8

y = -6x+4

The error in the students work is

y -(-8) + 8 = -6x + 12 + 8

subtracting a negative is adding

y+8

They should subtract 8 from each side instead of adding 8 to each side

4 0
3 years ago
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Supplementary angles are two angles whose measures have a sum of 180∘. What is the value of x? Write and solve an equation for x
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3 years ago
0.563498 TO 3 DECIML PLACES
raketka [301]

Answer:

0.563

Step-by-step explanation:

0.563498 ~ 0.563

here the 3 decimal place is '3' and using the 4rth decimal place we determine wether it will be '3' or the next num '4' .

The 4rth place is '4'(as it is lesser than 5) the 3rd decimal place will become 3.

I hope im right and i hope I am understood  

8 0
3 years ago
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