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3 years ago

Write an equation in slope-intercept form of the line that passes through the points (7, – 4) and (3, -1).

Mathematics

1 answer:

Lena [83]3 years ago

8 0

Answer:

Step-by-step explanation:

y2-y1/x2-x1

-1-(-4)/3-7

3/-4

y=mx+b

For the y coordinate it can be either -4,or -1

-4=3/-4x+b

b=13/4

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Which expression is not equivalent to 7(3+5)

irakobra [83]

Answer:

Any expression that doesn't equal 56... You didn't really provide any answer choices, so that's the best answer I have for you...

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3 years ago

Help me please please

cupoosta [38]

Answer:

(7, 5)

Step-by-step explanation:

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2 years ago

Solve each system of equations by graphing y=2/3x+3 3y=2x+15

dangina [55]

Answer:

There is no solution to that equation.

Step-by-step explanation:

First thing to do is to put the second equation in terms of y. To do so the equation becomes y= 2/3x+5. Comparing those two equation you can see that the slopes are the same and thus means that the system has no solution.

Another way to see this is by graphing both of thee equations is a calculator and seeing there are no points of intersection.

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2 years ago

If 10 miles=16km, about how many miles would be equal to 76 km?

Shalnov [3]

it would be 7 lolz dheisns

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2 years ago

Read 2 more answers

You are considering developing a regression equation relating a dependent variable to two independent variables. One of the vari

lys-0071 [83]

Answer:

Step-by-step explanation:

a. How many dummy variables are needed to represent the categorical variable?

We need 1 less dummy variable than outcomes for the categorical variable.

categorical variable has 2 outcomes

So, we need 2-1 = 1 dummy variable.

Answer: 1

Note: If our categorical variable had 5 outcomes, we would need 5-1 = 4 dummy variables.

b. Write the multiple regression equation relating the dependent variable to the independent variables.

Note: Depending your your professor, this can be written one of the following ways...

yhat = a + b1 x1 + bx2

yhat = b0 + b1 x1 + b2 x2

yhat = beta0hat + beta1hat x1 + betahat2 x2

where x1 is the ratio variable

and x2 is the dummy variable

c. Interpret the meaning of the coefficients in the regression equation.

b0 = the predicted value of y when x1 and x2 both equal 0.

b1 = the change in y when x1 increases by 1 unit holding x2 constant.

b2 = the predicted difference in y between the two possible outcomes of the categorical variable holding x1 constant.

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3 years ago