The ratio of holly's age to that her aunt is 4: 9. when holly was born her aunt was 15 years old. how old is holly's aunt now?

27 years

Step-by-step explanation:

Let Holly's age be h and Aunt's age be a. We can setup 2 equations and solve.

1.

2. a - 15 = h

We can plug in equation 2 into equation 1 to solve for aunt's age:

Holly's aunt's age is 27

It must have the same slope as the given line, so

m = -A/B = -1/-2 = 1/2

So far, we have

y = mx + b = x/2 + b

Use the given point to find b.

4 = -2/2 + b = -1 + b

b = 5

y = x/2 + 5

Multiply through by 2.

2y = x + 10

Standard form:

x - 2y = -10