Write an equation in point-slope form of the line that passes through the point (4,7) and has a slope of -1 please help!​

3x+y=9 has slope -3. A line in the plane and parallel to the given equation's line also has slope -3. To also pass through a point (4,-7), the equation for this line is y%2B7=-3%28x-4%29, in the point-slope form.

Step-by-step explanation:

i hope this helps P. S Im still a Elementary hindi ko po alam lahat sorry

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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