Two piers, A and B, are located 105 km away from each other along a river. A motor boat, with a speed of 40 km/hour in still water, is cruising between the two piers. How much time, t (in hours) will the motorboat need to get from pier A to pier B and back, if the speed of the current is 5km/hour?

yo

step-by-step explanation:

yo

it has the same slope and a different y-intercept

hope this : )

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?