Asked by Hannah
IF point A is (3,8) and point B is -6,-4)and the slope is 4/3 what would the x and y intercepts be?
Answers
Answered by
mark someone help me! reiny or jai please
do you have answer choices?
Answered by
Hannah
No
Answered by
bobpursley
see other problem
Answered by
Reiny
Hannah, you have had several related questions, and should be able to do these by now.
Once more ....
you slope is correct.
Here is a method that should work for you all the time
if you know the slope and a point
( let's pick the point (3,8) with slope 4/3
then (y-8)/(x-3) = 4/3
cross-multiply and your fractions disappear.
4x - 12 = 3y - 24
4x - 3y = -12
This equation is often called the "standard form" in some textbooks.
it is very easy to find the intercepts from that form .
let x = 0 (put your little pinkie over the x term, what have you got left ? ) y = 4
let y = 0 (put your little pinkie over the y term, and what is left ? ) x = -3
and there you go, you got your intercepts.
Once more ....
you slope is correct.
Here is a method that should work for you all the time
if you know the slope and a point
( let's pick the point (3,8) with slope 4/3
then (y-8)/(x-3) = 4/3
cross-multiply and your fractions disappear.
4x - 12 = 3y - 24
4x - 3y = -12
This equation is often called the "standard form" in some textbooks.
it is very easy to find the intercepts from that form .
let x = 0 (put your little pinkie over the x term, what have you got left ? ) y = 4
let y = 0 (put your little pinkie over the y term, and what is left ? ) x = -3
and there you go, you got your intercepts.
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