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Question

x: -2 -1 0 1 2
y:
Use the function rule to complete the table.
−10x+y=4
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The question is above and I am very confused? Could someone explain how this works and how I get the answers?

Answer 1

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Find the function rule.
x: -2 -1 0 1 2
y: 9 4 -1 -6 -11
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This is the seconds question and as I said before I am confused and need some help on how to find the answers.

Answer 2

for the first one:
rewrite it as y = 10x + 4 , (since you need the y values, express the
equation in terms of y)
now just sub in the given x values
e.g.
if x = -2 , y = 10(-2) + 4 = -20+4 = -16
if x = -1, y = 10(-1) + 4 = -10+4 = -6
..
if x = 2 , y = 10(2) + 4 = 20+4 = 24

for the second, did you notice that over every increase of 1 in the x
the y decreases by 5
so it must be y = -5x + b
now just use one of the points , e.g. (2, -11)
-11 = -5(2) + b
-11 = -10 + b
- 1 = b

your function is y = -5x - 1

Answer 3

solving for y ... y = 4 + 10 x
... plug in the x values to find the corresponding y values

as x increases by one , y decreases by five ... y = -5 x + c
... c is the constant term for the x's and y's to "match up" correctly
... 9 = (-5 * -2) + c ... 9 = 10 + c ... -1 = c
... the function rule is ... y = -5 x - 1

Answer 4

Wait I'm confused l only have 1 question?!?