Answer: You could either multiply or divide. I reccommend asking for help with your mom or teacher. Hope this helps a bit.
Step-by-step explanation:
Answer:
6 km/hr
Step-by-step explanation:
Sue can ride her bike 14 km/hr faster than she can walk. So for each step, add 14 km/hr.
Solve

Therefore, it is 6.

Start off by finding the slope of the line with the formula
.
Substitute the values. 
Subtract. 
Simplify. 
is the slope of the line.
Now, use the point-slope formula to create an equation, where
is the slope and
is a known point on the line. 
Substitute the values. 
Simplify. 
Move the
to create the final equation in slope-intercept form. 
(x+2)(5x-1) (x+10)(x+7)
(x+10)(x+2) 3(5x-1)
Cancel like factors and you're left with. (x+7)/3