This is an incomplete answer sorry
X = -1
y = 2
m = -3/4
b = ?
2 = -3/4 (-1) + b
2 = 3/4 + b
1.25 = b
y = -3/4x + 1 1/4
standard form: 3x + 4y = 5
The answer would be a positive 15.1 or +15.1 because the positive number is greater than the negative which would make your answer positive, thats why you got it wrong :)
To solve for x and y, isolate each variable and simplify your equation:
Solve for x:
2x+7=3y-1 (Subtract 7 on each side)
2x=3y-8 (Divide by 2 on each side)
x=
Solve for y:
2x+7=3y-1
2x+8=3y (Add 1 on each side)
=y (Divide by 3)
y=
~I hope this helps!~
Answer:
$29.67
Step-by-step explanation:
first you would fin out how much the total would be with the sales tax( which is equal to $4.89) added to the initial cost which should add up to $77.39
the 15% tip would add $11.61 to the $77.39
divide 89 by 3 which should give you 29.67