Equation of a straight line by Belén Rucci https://padlet.com/belrucci/nmhsr0nop5o61kkn Important things to remember. en-us 2020-08-26 01:59:25 UTC 2023-02-09 14:49:49 UTC hello@padlet.com https://padlet.net/icons/png/1f9ee.png Romi https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722679647 To calculate m you use the following equation:
y2 - y1
-----------
x2 - x1]]> 2020-09-05 15:45:48 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722679647 Romi https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722680802 for two lines to be parallel they need to have the same gradient (m)]]> 2020-09-05 15:48:17 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722680802 Romi https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722681249 for two lines to be perpendicular their gradient has to be the opposite and reciprocals]]> 2020-09-05 15:49:18 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722681249 kate https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722690582 there are two different ways to calculate the equation of the straight line:
- y= mx + n
- ax+by+c=0]]> 2020-09-05 16:06:35 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722690582 kate https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722692570 in the equation 
ax+by+c = 0 
all the numbers must be integer numbers. ]]> 2020-09-05 16:10:32 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722692570 kate https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722693073 a line that goes straight across has a gradient of 0]]> 2020-09-05 16:11:33 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722693073 luli https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722699604 to calculate n you have to take the coordinates of one of the points of the line and then replace the y and the x ]]> 2020-09-05 16:23:41 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722699604 Iael https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722790968 Lines that are parallel must have the same gradient]]> 2020-09-05 19:19:04 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722790968 Iael https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722804506 a line is perpendicular to another one when its gradient is reciprocal and opposite. 
For example: y=4/3x+1
y=-3/4-8]]> 2020-09-05 19:47:27 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/722804506 mica https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/723496160 in parallel lines, the gradient of the lines must be the same. 
for example:
y = -1.5x + 3
y = -1.5x -2]]> 2020-09-06 17:05:40 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/723496160 VICKY: find the equation of the gradient and a point on the line https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/723617549 example: 
We know that the line has equation y=mx+cy=mx+c, and we know that m=3m=3, so the equation is y=3x+cy=3x+c.


Now when x=1x=1, we must have y=2y=2, as the point (1,2)(1,2) lies on the line. 

So we can substitute in x=1 and y=2 to get.
2= 3 . 1 + c
2= 3+ c
c= -1
]]> 2020-09-06 20:25:39 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/723617549 luz https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729419226 To lines are parallel when their equations have the same gradient. For example: 
y=2x+1
y=2x-34
And for two lines to be perpendicular, their gradients have to be opposites and reciprocals.
For example:
y=4x-2
y=-1/4x-45]]> 2020-09-08 23:30:29 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729419226 belrucci https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729837598 2020-09-09 03:13:29 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729837598 belrucci https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729845845 2020-09-09 03:18:46 UTC https://padlet.com/belrucci/nmhsr0nop5o61kkn/wish/729845845