Maths, Addmaths and Statistics: Post your doubts here!

[zainabkhann]

i think its wrong cause equation is y=-x

so would it be on the bottom left hand side of the axis?

 

[zainabkhann]

what's the question??

Question 1 part d

 

[Bilal Khan]

so would it be on the bottom left hand side of the axis?

yes.

 

[Minato112]

so would it be on the bottom left hand side of the axis?

Yes on the bottom left hand side.

Question 1 part d

the gradient of the line y = x + 2 is equal to 1
Therefore the gradient of the perpendicular line is -1

 

[zainabkhann]

Yes on the bottom left hand side.


the gradient of the line y = x + 2 is equal to 1
Therefore the gradient of the perpendicular line is -1

Thankyou , so do we always change the signs when they ask for a perpendicular line gradient?

 

[Bilal Khan]

Yes on the bottom left hand side.


the gradient of the line y = x + 2 is equal to 1
Therefore the gradient of the perpendicular line is -1

yeah.that's right.

 

[zainabkhann]

yes.

thankyou. How would we solve questoion 9 c ii) the one where we need to plot the points using the matrice values.

 

[Bilal Khan]

Thankyou , so do we always change the signs when they ask for a perpendicular line gradient?

no problem.

yeah.we do.

 

[Minato112]

Thankyou , so do we always change the signs when they ask for a perpendicular line gradient?

U change sign + u do the reciprocal...

Here -1 becomes 1/1 = 1

If the gradient were -2/3 becomes 3/2 (U remove the sign + u do the reciprocal)

 

[zainabkhann]

Guys for question 10 from the same past paper year may/june 2012, do we use the formula for the sector : area : piexr^2 = angle/360? Because thats what i did and i got the wrong answer

 

[Bilal Khan]

U change sign + u do the reciprocal...

Here -1 becomes 1/1 = 1

If the gradient were -2/3 becomes 3/2 (U remove the sign + u do the reciprocal)

yeah.reciprocal's also taken.
forgot to mention that.

 

[zainabkhann]

U change sign + u do the reciprocal...

Here -1 becomes 1/1 = 1

If the gradient were -2/3 becomes 3/2 (U remove the sign + u do the reciprocal)

Thanks for telling me this !

 

[Minato112]

Thanks for telling me this !

No prob

 

[zainabkhann]

No prob

Can you help me out on the other two questions that i have posted above please.

 

[Bilal Khan]

Guys for question 10 from the same past paper year may/june 2012, do we use the formula for the sector : area : piexr^2 = angle/360? Because thats what i did and i got the wrong answer

60/360 x pie15square.

 

[zainabkhann]

60/360 x pie15square.

Isnt it the same thing though?

 

[Bilal Khan]

Can you help me out on the other two questions that i have posted above please.

sorry yaar,i have studied matrices.but not transformations.

 

[zainabkhann]

60/360 x pie15square.

And even if i use the formula that you stated, it is still giving me the wrong answer, its actually 687 :/

 

[zainabkhann]

sorry yaar,i have studied matrices.but not transformations.

Its okey

 

[Bilal Khan]

Isnt it the same thing though?

its the same thing.but i have used the values.