Can someone help with this please?

y = 4x

Step-by-step explanation:

Using two points, (1, 4) and (2, 8),

Slope =

m = 4

Substitute m = 4, x = 1, and y = 4 into y = mx + b.

Thus:

4 = (4)(1) + b

4 = 4 + b

4 - 4 = b

0 = b

b = 0

To find the equation, substitute m = 4 and b = 0 into y = mx + b

Thus:

y = (4)(x) + 0

y = 4x

answer:

(-8,7)

explanation:

we know that  

f

(

−

3

)

=

7

therefore, if we wish to get the output as 7, in the function, we need to have our input to be -3.

looking at the function  

f

(

x

+

5

)

, what should the value of x be, such that the input in the function becomes 7?

we simply equate the terms,

x

+

5

=

−

3

x

=

−

8

thus, the point on the new function would be  

(

−

8

,

7

)

d

step-by-step explanation: