Question

slope intercept form of equation of line through points. through: (-5, -3), slope = 2/5

Answer 1

equation of a line can be written in the form (x-x_1)m=y_1-y

Answer 2

oops (x-x_1)m=y-y_1

Answer 3

we know m=2/5 and we know a point (x_1,y_1)=(-5,-3)

Answer 4

(x-(-5))2/5=(y-(-3))

Answer 5

(x+5)2/5=y+3

Answer 6

2x/5+5*2/5=y+3

Answer 7

2x/5+2=y+3

Answer 8

subtract 3 on both sides to put it in the form y=mx+b

Answer 9

okay

Answer 10

y=2x/5-1

Answer 11

i just dont understand how -5 and -3 turned into -1

Answer 12

if we subtract 3 on both sides 2-3=-1

Answer 13

of mx + b?

Answer 14

no you were asking how i got -1 right?

Answer 15

yea
i understand the y= 2/5 x just not how u got -1 from (-5, -3)

Answer 16

do you understand where I got 2x/5+2=y+3

Answer 17

not the 2nd 2 and 3

Answer 18

the point slope formula is (x-x_1)m=y-y_1 where in this case a line on this point is (x_1,y_1)=(-5,-3) and m=2/5 since that is the slope of this line

Answer 19

so we have (x-(-5))*2/5=y-(-3)

Answer 20

(x+5)*2/5=y+3

Answer 21

Use distributive property we have 2x/5+5*2/5=y+3

Answer 22

we want to put this in y=mx+b form which is the slope intercept form

Answer 23

Since the above equation has y by itself we need to solve for y by subtracting 3 on both sides

Answer 24

2x/5+2-3=y

Answer 25

y=2x/5+2-3

Answer 26

y=2x/5-1

Answer 27

o okay now i understand thank u

Answer 28

cool!

Answer 29

the slope-intercept equation is:

y = mx + b

You know the slope, and they give you (x=-5,y=-3); so lets plug and play...

-3 = (2/5)(-5) +b ; solve for "b".

-3 = -2 + b
-1 = b

throw away your (-5,-3) and use the equation as it:

y = (2/5)x - 1