The general form of an equation in intercetp form is:
![y=mx+b](https://img.qammunity.org/2023/formulas/mathematics/high-school/smsb8cbft03lwblmi49nf2l6jby2ofxzws.png)
Where m is the change of y in function of x and b is the value of b when x is 0
In this situation you have:
y=C
x=r
m= 1.75 ( C increase 1.75 each r)
b= 7 (When there is not ride r=0 the admission fee is 7)
Then, you have the equation:
![C=1.75r+7](https://img.qammunity.org/2023/formulas/mathematics/high-school/ge9f8ejmz0xtx1vkx5g88t2ey8t65r8tym.png)
or C = 7 + 1.75r