Answer:
(5,4) & (8,-10)
Step-by-step explanation:
First step:
You can use any number you want for b (I used 4)
Make x=0
Make y=0
Subtract 4 from both sides
Divide both sides by 
Second step:
In order to make a line perpendicular to another the slope of the second line will be the negative inverse of the first line. So 
will be 
for the second line.
Then you just need to repeat the process in first step to get the intercepts. (Again I used a random number like -10 for b)
Answer:
5.50
Step-by-step explanation:
I am smart
Answer:
6x + 30
Step-by-step explanation:
3*2x = 6x
3*10 = 30
Step-by-step explanation:
First, let's distribute the terms outside each parentheses to get rid of them:
Next, let's move the terms with an 
variable to the left side of the equation, and everything else to the right side:
Answer:
20
Step-by-step explanation:
Side of the square = hypotenuse of triangle = √(4² + 2²)=√(16 + 4)=√(20)
Area of a square = (side)² = (√20)² = 20 units²
