you drove to your cousins house which is 460 miles away. after 2 hours you had goe 100 miles. after 8 hours you reached your destination. write an equation that gives the number of miles you had driven y in terms of the number of hours you had driven.
Hello there
How are you?
Please help me...
Hello, I'm doing fine and trying to think of a way to solve this easily. Don't suppose this is multiple choice is it?
no...
this a hmwrk problem...
i am in 7th grade...
Alright then give me a sec to see how to write this out.
ok
Hello?
Still here, are you doing Linear functions or...what type of math?
algebra
Hello?
Linear Functions is apart of algebra, you said this is homework so what type of stuff were you learning? Like formulas that could help you plug this in.
slope...we have to write it in slope intercept form.... no formulas my teacher told me...
Okay then well our formula for slope is m = (y2 - y1) / (x2 - x1), familiar yes?
yes
Good. Now our points we'll be working with is (2,100) and (8,460). Now we need to plug them into the formula, can you do that?
yes
how did you get the pionts?
Because we drove 100 miles after 2 hours and in 8 hours we reached our total 460 miles. So think of it as x=time and y=distance.
oh... thank you so much... you want me to do it right now?
Yep, now plug in our points and show me how the equation looks afterward. :)
ok wait...
i got 6
That's just part of our solution: m=(460-100)/(8 - 2) =360/ 6. Do you understand that?
yes
what do we do next?
Alright now we know that gives us 60. What we need is the linear function, our equation for this is y=m*t + b. Right now we have b = y - 60*t. m is slope, t is time, y is distance and b is our y-intercept.
but i got 6 how did you get 60?
Because our slope equation was m=(460-100)/(8 - 2) =360/ 6. 360 divided by 6=60
oh yeah...sorry
It's okay, you understand the rest tho right?
yes...thank you so much!
Lol no prob so you need me to walk you through the rest or...?
no i got it...
You r the BEST!!
Lol just doing my job. Take care. :)
you too!!
do you have a email...we can keep in touch...
My email gets flooded x.x Lol but I'm on here alot so you could reach me through this sites mailing system easier . :)
what do you mean by flooded?
Tons of ppl emailing allll day. And I don't check it as much
oh...
so i will see ya later.!
Yep bye.
Join our real-time social learning platform and learn together with your friends!