Question

what is 3x + y = 2 in Y=mx+b form? im too lazy -_-

Answer 1

rearrange for y=mx+b
3x+y = 2
bring the y to the right hand side and 2 to the left hand side.
3x-2=-y
-3x+2=y
y=-3x+2

Answer 2

thanks :)

Answer 3

no problem.

Answer 4

when graphing it would be a negative slope right?

Answer 5

yes u are right because the gradient(m) is -3.

Answer 6

if the gradient positive it goes upwards, downwards if it is negative.

Answer 7

thats going down 3, left 1 or down 3, right one

Answer 8

um no

Answer 9

my bad.

Answer 10

\[\frac{rise}{run}=\frac{-3}{1}\]

Answer 11

oh

Answer 12

rise run we get from any two points on the line.

Answer 13

I'm sure u know that?

Answer 14

heh yeah...... duh? who does'nt?

Answer 15

haha kk.

Answer 16

the gradient can also be calculated by using the gradient formula.
(y2-y1) / (x2-x1)

say we have two points on the straight line
(5,1) (2,4)
x1,y1 x2,y2

using the gradient formula
m=(4-1) / (2-5)
m=3/-3
m=-1

Answer 17

oh

Answer 18

i see

Answer 19

we did that in class, i just did'nt know it was called that