The temperature in wichita, kansas, is -3ºc. the temperature
in ryan's hometown is 18° colder than that. what is the
temperature in ryan's hometown?

me

-21

Step-by-step explanation:

on a number line count down from -3 18 places and you get to -21

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.