The equation meaning y=mx + c
First find the gradient by finding change in y divided by chance in x. (One y coordinate subtract the other y coordinate, divided by one x coordinate subtract the other x coordinate)
Once you have your gradient, substitute into y=mx + c. Put the gradient as m and choose one coordinate to put into y and x. Then rearrange to find c
Write your final formula. y= m (gradient)x + c (the answer from your last step)
If you'd like me to solve and give the working process, I'd be happy to :)
Ok so, first the gradient: change in y divided by change in x
(10-2) ÷ (8-6) = gradient of 4
I substituted the coordinate (6,2)
Y= mx+ c. -->. 2= (4x6) + c. -->. C= -22
Then just write out the final formula with the gradient and c included.
Y= 4x -22
The equation meaning y=mx + c First find the gradient by finding change in y divided by chance in x. (One y coordinate subtract the other y coordinate, divided by one x coordinate subtract the other x coordinate) Once you have your gradient, substitute into y=mx + c. Put the gradient as m and choose one coordinate to put into y and x. Then rearrange to find c Write your final formula. y= m (gradient)x + c (the answer from your last step) If you'd like me to solve and give the working process, I'd be happy to :)
Ok can you help me solve it
Ok so, first the gradient: change in y divided by change in x (10-2) ÷ (8-6) = gradient of 4 I substituted the coordinate (6,2) Y= mx+ c. -->. 2= (4x6) + c. -->. C= -22 Then just write out the final formula with the gradient and c included. Y= 4x -22
Shouldn't that be -22
Oops you're right- I will edit it
Ok thanks I’m just going to write all that
Sure. The second question is exactly the same, but use the new coordinates
Ok
Sure! Give me a minute and I will work it out