The number of calories burned while jogging varies directly with the number of minutes spent jogging. If George burns 150 cal by jogging for 20 minutes, how many calories does he burn by jogging for 30 minutes?

225

Step-by-step explanation:

he burns 75 calories every 10 minutes if you do 20/2 and 150/2, just do

75 x 3.

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.

step-by-step explanation:

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