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Lelu [443]
2 years ago
8

Hello, i need some help with #1 ​

Mathematics
2 answers:
bazaltina [42]2 years ago
7 0
Y=2x-3

y2-y1/x2-x1
11-9/7-6
2/1
2 which is the slope

if you use the pattern to get to 0 as the x value, you will get -3 as the y value meaning it is the y intercept so the answer is:

y=2x-3
Murrr4er [49]2 years ago
7 0
The y intercept is
Y=2x-3
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4x+5y-5z=196 -11x-7y+12z=-211 -8x-9y-z=-236 Solve for x y z
FrozenT [24]
Have you learned matrices yet? I'm going to use that to solve these, please refer to the photos.

I solved the system by using a matrix calculation. The work always needs to be shown and you do that by setting up the matrix like in the first photo and also writing out all your equations. In a TI calculator, to do this you press 2ND-X^-1,GO TO EDIT - [A] - 3×4- now enter the coefficient of the system of equations variables. NOW 2ND MODE- 2ND-X^-1 -GO TO MATH- ALPHA APPS

Now, if you don't know this you may be confuse so after rref([A]) was enter a matrix came up with [1 0 0 -21] in the top row this means x equal -21. So, the next row is y and it came out as [0 1 0 46] so y equals 46 and I'm going to let you figure out what z is by looking at the matrix.

SO... X=-21 Y=46 and Z=-10

Let's Test it

4x + 5y - 5z = 196 \\ 4( - 21) + 5(46) - 5( - 10) = 196 \\  - 84 + 230 + 50 = 196 \\ 196 = 196



3 0
2 years ago
Read 2 more answers
Which graph shows the solution to this system of linear inequalities?
galben [10]

Answer:

C

Step-by-step explanation:

Since all the graphs have the same line, you’re just looking for the correct shaded region. Since for both equations you want the shaded region to be less than the line, answer c solves the inequality.

7 0
3 years ago
For f(x) = -x + 8, which statement is true?
xenn [34]

I think it’s f(x+k) = f(x) + k correct if I’m wrong

6 0
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marysya [2.9K]

Answer:

42000*1.04^(n-1)

Step-by-step explanation:

4% is equal to 0.04, a raise is 1+0.04=1.04

1.04 is now the number we are multiplying by to get a new yearly salary for Harmony.

42000*1.04^(n-1) since n is how many years after she has the job you have to raise it to the power and subtract one.

3 0
1 year ago
PLEASE HELP!! answer the question in the photo
Ivan
The answer will either be E or 38
3 0
3 years ago
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