Something is wrong here, the slope is off...

m=(y2-y1)/(x2-x1)

m=(1-3)/(12--4)

m=-2/16

m=-1/8

So the point slope form should be:

y-1=(-1/8)(x-12)

The standard form of the line is ax+by=c so we need to rearrange it to reflect the this form...multiply both sides by -8 to get:

8-8y=x-12 subtract 8 from both sides

-8y=x-20 subtract x from both sides

-x-8y=-20 by convention, the coefficient of x should be positive, multiply both sides by -1

x+8y=20

....

Just to show that the equation given you is incorrect..

y-1=(x-12)/4 using the point (-4,3)

3-1=(-4-12)/4

2=-16/4

2=-4 which is obviously incorrect...(they had the wrong slope for the two points given)

5 0

3 years ago

Which equation represents this problem? Carol's age is three more than two times Lindsay's age. Carol is 39 years old. How old i

dem82 [27]

Answer:

2l + 3 = 39

Step-by-step explanation:

Let l = Lindsay's age in years.

Carol's age is three more than two times Lindsay's age

Carol = 2l+3

Carol = 39

39 = 2l+3