Answer:
(7,3)
Step-by-step explanation:
you can add the equations together to eliminate y and first solve for x
(x-3y = -2) + (x+3y=16) = (2x = 14)
x = 7
then plug x into one of the equations to solve for y
(7) - 3y = -2
9 = 3y
y = 3
the solution is (7,3)
Answer:
it costs 7-8$ per hour
Step-by-step explanation:
the answer is estimated
The answer should be C. y=-3x+7
use the formula y=mx+b where mx is the slope and b is the y-intercept.
in this case, the slope is decreasing by 3 so -3 would fit in for mx. if you look on the y-int you’ll see that the value is positive 7.
when you put this together, you’d get the equation y=-3x+7
hope this helps.