Standard form:
Y - 0= 1(x - 1)
Y - 0= x - 1
-x+y= -1
- (-x+y= -1)
Answer:
x-y=1
Slope-Intercept form:
Y - 0= 1(x-1)
Y - 0 = x - 1
Answer:
Y= x-1
Among many other formulas, the area of a triangle is

where B is the angle between sides a and c.

Answer: 92.05 sq cm, first choice
Bonus. Here's a formula for the area S of a triangle your teacher doesn't know:

Answer:
d = 25
Step-by-step explanation:

The value of d has to satisfy the inequality
so replace d with one of the given options

We have to simplify the fraction first

Answer:
5.5
Step-by-step explanation:
add 2 to 3.5
There are 144 square inches, 12 x 12 = 144