Answer:

Step-by-step explanation:
By FOIL method, 
Answer:
-7x+6
Step-by-step explanation:
Use the distributive property.
Add the negative in front of each number in the parenthesis.
- (7x) -(-6)
Since 6 is negative, a negative multiplied by a negative is equal to a positive. Change the negative in front of the 6 into a positive.
-7x + 6
Answer : the answer to 6.403 divided by 8 is 0.8
Answer:
slope= 3/2
y-intercept= -1/2
Step-by-step explanation:

The product of the gradients of 2 perpendicular lines is -1.


Substitute a coordinate into the equation.
When y=7, x=5,
