Hi I need help with my math problem. It is:
Name the function rule from the table given.
Table-
X= Y=
-4 4
-2 2
0 0
answers:
y = -x
y = -4
y = 2x
y = x
I do not get how to solve this problem!
13 years ago
13 years ago
look at the first entry in the table
if x = - 4, y = 4
now look at each rule
1st rule says,
that y = -x ( y equals the neg of x)
2nd rule says,
y = -4 (the value for y is -4)
3rd rule says
y = 2x (y is two times the value of x)
4th rule
y = x (y and x are the same)
since if x = - 4, y = 4 (1st entry)
the rule would be
y = -x
do you understand?
look at the other entries in the table and see how they all follow this rule
13 years ago
I need help finding heighth of a pyramid.
13 years ago
You divide by -1
11 months ago
To identify the function rule from this table, we need to observe the relationship between the values of x and y.
Looking at the table, we can see that as the value of x increases by 2, the value of y decreases by 2. This indicates a linear relationship between x and y.
To find the function rule, we can determine the rate of change or slope. We can arbitrarily choose any two points from the table, for example (-4, 4) and (0, 0).
The formula to calculate the slope is:
Slope = (change in y) / (change in x)
Slope = (0 - 4) / (0 - (-4)) = -4 / 4 = -1
Now that we know the slope is -1, we can use the slope-intercept form of a linear equation, which is y = mx + b, where m is the slope and b is the y-intercept.
In this case, the slope is -1, so the equation becomes:
y = -x + b
To find the value of b, we can substitute any point from the table into the equation. Let's use the point (0, 0):
0 = -(0) + b
0 = b
Now that we have the value of b, which is 0, we can write the final equation:
y = -x + 0
Simplifying it, we get:
y = -x
From the given answer choices, the correct function rule for the table is:
y = -x