What is the y-intercept of the line that passes through (-6,2) and (4,-2) ? 2
5
22
5
No lo a los alusta
2
5
22
5

Step-by-step explanation:

Slope (m) =  

ΔY

ΔX

=  

-2

5

=-0.4

θ =  

arctan(ΔY) + 360°

ΔX

=338.19859051365°

ΔX = 4 – -6 = 10

ΔY = -2 – 2 = -4

Distance (d) = √ΔX2 + ΔY2 = √116 = 10.770329614269

Equation of the line:

y = -0.4x – 0.4

or

y =  

-2x

5

–  2

5

When x=0, y = -0.4

When y=0, x = -1

Step-by-step explanation:

Slope (m) =  

ΔY  

ΔX  

=  

-2  

5  

= -0.4  

θ =  

arctan( ΔY ) + 360°  

ΔX  

= 338.19859051365°  

ΔX = 4 – -6 = 10  

ΔY = -2 – 2 = -4  

Distance (d) = √ΔX2 + ΔY2 = √116 = 10.770329614269  

Equation of the line:  

y = -0.4x – 0.4  

or  

y =    

- 2 x  

5  

–  2  

5  

When x=0, y = -0.4  

When y=0, x = -1

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here