At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
what does x intercept mean? y is 0? or x is 0? refer to the cartesian plane.
|dw:1362416956027:dw| this is called the cartesian plane. x intercept means what length does the curve cut from the origin.
origin is the intersection of x and y axis
as i said, x intercept is the length the curve cuts on the x axis. so we have to find where the curve cuts the axis. what would put equal to 0? y no? correction: not from the origin in case of any curve. only in case of a staright line.
yup. you would get two points. the distance between those points will give you the length of intercept.
3x^2 + 19x – 40=0 solve.. take your time.
i deleted that. do it yourself. you'll learn better.
suppose the general equation is ax^2 +b x + c when you have to solve this equation you always have to find those two numbers whose product is a*c and sum is b. likewise, if you have ax^2 +b x - c , sum of the numbers has to be b and product has to be a*-c. here, you have to find two number whose product is -120 and sum is 19.
can you now find those 2 numbes?
no no. those number arent the roots. you have to do this way. 3x^2+19x-40=0 -->3x^2 +24x -5x -40=0 -->3x(x+8) - 5(x+8)=0 taking x+8 common (3x-5)(x+8)=0 x=5/3,-8 we still dont have the intercept. first tell me if you got this.
basically we have to resolve 19 into 2 numbers which have the product -120 and sum 19. it makes our job to find x easier.
yes. it can be confusing. take your time. i'll recommend watching some vids on how to find roots. they can be really helpful.
nope. x intercept is the length the curve cuts on the x axis. so basically the points you have are where the curve cuts the x axis right? |dw:1362419151119:dw| so what you would have to is. calculate the distance between 5/3 and 0(origin) and 0(origin) and -8. these would be 5/3 and 8 respectively. add them and you have your answer.
oh dang. yeah it means the points. i was confusing it with something else. :o
you're welcome. :)