Find an equation in slope-intercept form for the line through point (-5,2) and perpendicular to the line containing the two points (2,3) and (1,-2)

As we know the formula to calculate the line of equation is y - y1 = m (x - x1)

Where m is the slope. y1 is the first y co ordinate. x1 is the first x co ordinate.

Now we do know that the slope of perpendicular line is the negative reciprocal of the slope of the original line.

So perpendiculars line slope is 5 so slope for our line is -1/5. Hence equation is y - 2 = -1/5(x + 5) and can now easily be solved.

step-by-step explanation:

ask goog great chance of finding the solution there

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