The scale used to make a scale model of a car is 1:18. The length of the model is 9 inches. How many feet long is the actual car?

The actual car is 13.5 feet long.

Step-by-step explanation:

1 : 18

9 inches : x inches

1 * 9 = 18 * 9

Thereby x = 162 inches

162/12 = 13.5 feet

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is