what is the solution of the system of equations y=3x-4 -3y=-9x+12 (4,8) infinitely many solutions (2,2) no solution

Step-by-step explanation:

y = 3x - 4

-3y = -9x + 12

-3(3x - 4) = -9x + 12

-9x + 12 = -9x + 12

0 = 0

infinitely many solutions

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.