Answer:
The solution is (-1/2, 3 1/2), or (-0.5, 3.5)
Step-by-step explanation:
Seeing that -x + 3 = y (in the second equation), substitute -x + 3 for y in the first equation, obtaining:
-x + 3 = 3x + 5
Combining the x terms, we get
3 = 4x + 5
Combining the constants, we get
4x = -2, or x = -1/2
Seeing that -x + 3 = y, substitute -1/2 for x and calculate y:
-(-1/2) + 3 = y = 3 1/2
The solution is (-1/2, 3 1/2), or (-0.5, 3.5)
So, first your going to have to put it in y=mx+b
2x-2y=14
-2x -2x
-2y=-2x+14
now divide everything by -2
y=1x-7
and then do the same to the other equation.
x-y=2
-x. -x
-y=-x+2
now divide everything by -1
y=x-2
Then you just graph it. You plot the y-intercept on the y axis. and then I this case go up one over one and your get the points for each player equation.
y=1x-7. y- intercept:-7. slope:1 over 1
y=x-2. y-intercept:-2. slope:1 over 1
Answer:
I cannot see the graphs, but option D is most likely.
1425/100=(57•25)/(4•25)
=57/4
=14 1/4
<h2>HOW TO: SOLVE AN APPLICATION</h2>
Step 1. Identify what you are asked to find and choose a variable to represent it.
Step 2. Write a sentence that gives the information to find it.
Step 3. Translate the sentence into an equation.
Step 4. Solve the equation using good algebra techniques.
Step 5. Check the answer in the problem and make sure it makes sense.
Step 6. Write a complete sentence that answers the question.
Remember that whatever the application, once we write the sentence with the given information (Step 2), we can translate it to a percent equation and then solve it.
Do you pay a tax when you shop in your city or state? In many parts of the United States, sales tax is added to the purchase price of an item. See Figure 6.7. The sales tax is determined by computing a percent of the purchase price.
To find the sales tax multiply the purchase price by the sales tax rate. Remember to convert the sales tax rate from a percent to a decimal number. Once the sales tax is calculated, it is added to the purchase price. The result is the total cost—this is what the customer pays.
