Answer:
(x,y) = (8,7)
Step-by-step explanation:
Solve equation [2] for the variable x
[2] x = y + 15
Plug this in for variable x in equation [1]
[1] (y +15) + y = 1
[1] 2y = -14
Solve equation [1] for the variable y
[1] 2y = - 14
[1] y = - 7 By now we know this much :
x = y+15
y = -7
// Use the y value to solve for x
x = (-7)+15 = 8
Solution :
{x,y} = {8,-7}
b (-1, -2) because the function value changed from increasing to decreasing
Answer:
Thanks, you are so generous
Step-by-step explanation:
29 students have to be in the class. If 29 students each pay 2.75, they will raise up 79.75 dollars! :)
Answer:
d because then you can solve for y then use your answer to find x