Find y when x=9 if y varies directly as the square of x, and y=100 when x=5.

324

Step-by-step explanation:

Given : y varies directly as the square of x

To Find : Find y when x=9

Solution :

We are given that y varies directly as the square of x

So, ---1

where k is the constant of proportionality

Now we are also given that y=100 when x=5.

Substitute the values in 1

So, equation becomes  

Now substitute  x= 9

Hence The value of y when x is 9 is 324

its a straight line parallel to the time axis

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.