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Contact [7]
3 years ago
10

Sylvie finds the solution to the system of equations by graphing. y = x + 1 and y = x – 1 Which graph shows the solution to Sylv

ie’s system of equations?

Mathematics
1 answer:
Furkat [3]3 years ago
6 0
Graphs of y = x+- 1 and of y = x - 1 are shown in the figure below.
The intersection of the two graphs is the solution for the two equations.

Answer:
There is no solution.

Explanation:
It is clear that the two lines are parallel and will never intersect.

Note that the equation for a straight line is of the form
y = mx + b
where
m = slope,
b = y-intercept.

y = x + 1 has slope of m=1.
y = x - 1 has slope of m=1.
The two slopes are equal.
Because parallel lines do not intercept, there is no solution.

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SUSTITUTION 3X-6Y=2<br> 5X+4Y=1
Montano1993 [528]
3x - 6y = 2
5x + 4y = 1

(-1/3, -1/6)

~Hope I helped!~



6 0
3 years ago
Mr. Notar is shopping for a crib for his new baby. He finds a coupon for 15% off. If the crib originally costs $450, how much wi
4vir4ik [10]
67.50

15x450/100
Have a great day
7 0
3 years ago
On a standardized exam, the scores are normally distributed with a mean of 145 and a standard deviation of 25. Find the z-score
Kryger [21]

Answer:

z = 2.6

Step-by-step explanation:

<u>Use the formula for z-score</u>

z=\frac{x-\mu}{\sigma}\\ \\z=\frac{210-145}{25}\\ \\z=\frac{65}{25}\\ \\z=2.6

This tells us that this person's score of 210 places them 2.6 standard deviations above the mean

5 0
2 years ago
Evaluate the function y= -3 (1/4) for x =-3 on top of the 1/4 is where the x goes. so it is 1/4 x
earnstyle [38]

\text{Consider the function}\\&#10;\\&#10;y=-3\left ( \frac{1}{4} \right )^x\\&#10;\\&#10;\text{now to evaluate the value of the function at }x=-3, \text{ we substitute}\\&#10;x=-3 \text{ in the given function and solve further for y.}\\&#10;\\&#10;\text{so we get}\\&#10;\\&#10;y=-3\left ( \frac{1}{4} \right )^{-3}\\&#10;\\&#10;\text{now using the exponent property, }\left ( \frac{1}{a} \right )^{-m}=(a)^m, \text{ we get}\\&#10;\\&#10;y=-3(4)^{3}\\&#10;\\&#10;\Rightarrow y=-3(64)\\&#10;\\&#10;\Rightarrow y=-192

so the value of the function at x=-3 is -192

7 0
3 years ago
Find the equation of the line between (7,−9) and (5,6) in slope intercept form.
poizon [28]
Set y=ax+b pass (7,-9) (5,6)
=》-9=7a+b
6=5a+b
=》2a=-15
a=-15/2
b=6-5a=6+37.5=43.5
=》y= -15/2(x)+43.5
2y+15x=87
5 0
3 years ago
Read 2 more answers
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