Look at the table of values below.
x y
1 -1
2 -3
3 -5
4 -7
which equation is represented by the table?
y = 1 − 2x
y = -x − 1
y = x − 2
y = 2x − 1

Hello,

Answer A
(1,-1)
(2,-3)
m=(-3+1)/(2-1)=-2

y+1=-2(x-1)==>y=-2x+1

y = 1 − 2x

Step-by-step explanation:

If you observe the given table, you would find that as x-values increase by one, y-values decrease by 2. This ratio of change can be found as the following,

The ratio of change is -2, which means the function is decreasing, beacuse its slope is negative.

Now, we can use the slope, one point and the point-slope formula, to find the equation that models those values

Therefore, ther right answer is the first choice.

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.

Just divide the x axis (the top) by 2 or multiply the y axis (the bottom) by 2