Without graphing, explain why this system of equations would result in a special case. Please be detailed in your explanation:
y = -3x + 2
y = -3x - 5
These lines are parallel since they have the same slope and different y-intercepts. If the lines do not intersect, which is the case with parallel lines, there will be no solution.
y = x + 4
y = 2x + 5
r + s = -6
r - s = -10
x = 4y
2x + 3y = 22
Solve this system via substitution:
-x - 7y = -20
-8x - 4y = -20
x = 1
y = 3
y = 3x - 2
y = -x - 2
8a + 5b = 9
2a - 5b = -4
y = x - 2
3x - y = 16
Solve this system by elimination:
-3x + 5y = -11
5x - 3y = 29
x = 7
y = 2
y = -3
x = 5
2x + 3y = 6
3x + 5y = 15
y = 3x - 1
7x + 2y = 37
Solve this system using elimination or substitution:
1/2 x + 5/4 y = -6
4/3 x - 1/2 y = -2/3
x = -2
y = -4
y = (1/3)x - 3
2x - y = 8
2a - 4b = 12
-8a + 16b = -48
3s - 2t = 4
t = 2s - 1
Two bananas and three apples cost $2.90. Three bananas and two apples cost $3.10. Find the cost of one banana and one apple. Define your variables, write a system of equations, solve, and write your answer as a sentence.
A banana cost 70 cents and an apple costs 50 cents.
y - 3x = 3
y = 3x - 2
(1/3)x + (1/4)y = 10
(1/3)x - (1/2)y = 4
t + u = 12
t = (1/3)u
The amount of money each child received when Mr. Vogel left $25,000 divided between his son and daughter, with the daughter receiving $5000 less than the son.
What is $15,000 for the son and $10,000 for the daughter?