Slope is

Then you use the equation

Where b is the y-intercept. To find it, plug in x and y from one of the points. Say, point 1 (1,10):

You know m (from above) and now you can solve for b.
Rearrange terms:

And that will be the answer.
Make sense?
Answer
What expression represents her age 7 years from now?
y =x+7x
Two years ago?
z=y-2x
Step-by-step explanation:
Answer:
C and D
Step-by-step explanation:
In naming an angle using 3 letters the letter denoting the vertex is always located in the middle of the 3 letters
Thus ∠BAC and ∠CAB