If f(x) = 4x + k and f (2) = f (1), then calculate the value
of K.​

-7

Step-by-step explanation:

given f(x)=4x+k

therfore, f(2)=4*2+k

we know that f(2) =1

so, 4*2+k=1

8+k=1

k=1-8

k=-7

12 Brainlest please?

Step-by-step explanation:

The key fact about this function f is that f(x+2) = 4(x+2) = 4^x multiplied by 4^2 and f(x+1) similarly = 4^x multiplied by 4.

So let’s put 4^x = some number Z. Then f(x+2) - f(X+1) = Z x 4^2 - Z x 4 or Z x 16 - Z x 4 = Z x 12, so k = 12

This is not in any way to criticise the answer already given which is perfectly correct. However I thought this might be easier to understand for the non-mathematician.

f(x+2) = 4^(x+2) = 4^2 * 4^x = 16 f(x)

f(x+1) = 4^(x+1) = 4^1 * 4^x = 4 f(x)

f(x+2) - f(x+1) = 16 f(x) - 4 f(x) = 12 f(x)

k = 12

if you need , reply with more info. u.

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: