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3 years ago

What is the value of this expression when x= -4 and y= 64? -437 + 12 O A O OB. OC. OD. -48

Mathematics

1 answer:

Arisa [49]3 years ago

4 0

The correct answer when you plug in x and y values is -32 however that answer is not there . Perhaps they only wanted it before combining all like terms ? So again it really should be -32 , but if force yo pick
an answer from the choices I would pick -16

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How do I do this please help??

Brums [2.3K]

Answer:

Slope: 4

Y-intercept: -5

Equation: y=4x-5

Step-by-step explanation:

Slope formula:

$\frac{y2 - y1}{x2 - x1}$

So let's use the ordered pairs (1, -1) and (2,3) from the table (it doesnt matter which ones you choose) and plug the numbers in to the formula:

$\frac{3 - ( - 1)}{2 - 1}$

Which is equal to:

$\frac{4}{1}$

Which is equal to 4. So the slope is 4.

To find the y-intercept, substitute the slope and an ordered pair into the slope-intercept equation, y=mx+b. So let's use (1,-1).

-1=4(1)+b

= -1=4+b

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So the y-intercept is -5.

Then for the equation, you just plug in the slope and the y-intercept into y=mx+b, which would be:

y=4x-5

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2 years ago

What is the value of this expression when x= -4 and y= 64? -437 + 12 O A O OB. OC. OD. -48​

What is the value of this expression when x= -4 and y= 64? -437 + 12 O A O OB. OC. OD. -48