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melamori03 [73]
3 years ago
9

The table shows ordered pairs of the function y=8-2x when x=8, the value of y is?

Mathematics
2 answers:
Nataly_w [17]3 years ago
8 0
ANSWER

When
x = 8
y =  - 8

EXPLANATION


The ordered pair in the table were generated with the function,
y = 8 - 2x


To find the value that corresponds to
x = 8

We substitute 8 in to the given function and simplify.



We obtain,

y = 8 - 2(8)

Let us multiply to obtain,

y = 8 - 16



We now simplify to get,
y =  - 8


Therefore when x is 8 the value of y is -8.

Paul [167]3 years ago
6 0
Y=8-2×
y=8-2(8)
y=8-16
y=-8
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Now coming back to the Explanation by four friends of Mina

Ivy’s explanation: I lined up the numbers to subtract. [As i have explained above you have to find first which number is bigger , then first you must write bigger number then if the bigger number has  only tenth place value mark hundred place as 0 and then start subtracting from Right to left.]

Hannah’s explanation: I lined up the two decimals according to place value. I put a 0 in the hundredths place to make it easier for me to subtract.   [ As i said above first you have to choose which number is bigger then you can proceed as you have done.]

Jose’s explanation: I lined up the two decimals according to place value   [ Jose you have made same mistake, first find which number is bigger then line up the number according to their place value, write the bigger number first then start subtracting as i have explained above.]

An’s explanation: I counted up from 15.75 to 176.3 to find the difference. I underlined each number I added on each line.   [ Too lengthy and very time consuming. Use the method as i have explined above.]




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