Irent a gym for $150.00 for 30 students. another time i rent the gym for $270.00 for 70 students. i need to find a fixed rate.(y= mx+b)

The fixed rate of gym fee of $60 plus a rate of $3 per student.

The fixed-rate is;

Given

I rent a gym for $150.00 for 30 students.

Another time I rent the gym for $270.00 for 70 students.

A linear function is a function that forms a straight line in a graph.

Let x be the number of students and y be the total cost of renting the gym.

To find the fixed-rate let us write the equation of line representing the total cost of renting a gym for x students.

The equation representing a fixed rate is;

I rent a gym for $150.00 for 30 students.

Another time I rent the gym for $270.00 for 70 students.

Subtracting both the equations;

Substitute the value of x in equation 1

Therefore,

The fixed-rate is;

Hence, the fixed rate of gym fee of $60 plus a rate of $3 per student.'

To know more about linear function click the link given below.

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y = 3x + 60

Step-by-step explanation:

Set up two equations and solve the system:

 270 = 70x + b

- (150 = 30x + b)

  120 = 40x

    3   =  x

Input "x" into one of the equations and solve for "b":

150 = 30x + b

150 = 30(3) + b

150 = 90 + b

60 = b

Equation: y = 3x + 60

This means that there is a flat fee of $60 plus a rate of $3 per student

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.