Question

What is the slope-intercept form equation of the line that passes through (2, 4) and (4, 10)?
y = −3x − 2
y = −3x + 2
y = 3x + 2
y = 3x − 2

Answer 1

Your best bet may be to find the actual slope of the line connecting the 2 given points. Remember the slope formula?

Once you have the slope, m, choose either of the given points and write its coordinates into the "point-slope formula for the equation of a straight line." Also substitute the value you found for m. Simplify your result. Compare your result with the four answer choices.

Answer 2

I used the y2-y1 over x2-x1 and my answer or slope was 3. what do i do next

Answer 3

What is your slope?

m = y2-y1 over x2-x1 Calculate the slope, please, from the given points.

Answer 4

My slope was 3

Answer 5

Sorry...I should have read your response more carefully.

Once you have the slope, m, choose either of the given points and write its coordinates into the "point-slope formula for the equation of a straight line." Also substitute the value you found for m. Simplify your result. Compare your result with the four answer choices.

Answer 6

i think i got it. Is it y=3x+2

Answer 7

Since your slope is +3, you may be able to eliminate the 1st 2 possible answers.
How would you know that y=3x+2 is correct?

Answer 8

isnt the two my x-coordinate?

Answer 9

No. That '2' represents the "y-intercept," and is also your "y-coordinate."

I'm asking you to demonstrate that your answer is correct. How would you do that?

Answer 10

i have no idea. i apoligize im just not good at math

Answer 11

it was an eduacated guess

Answer 12

Unfortunately, life throws many difficult situations at us that can't be resolved through educated guesses.

You need to do one of the following:

Substitute your m=3 and the coordinates of one of the given points into the point-slope formula for a straight line, simplify the resulting equation, and then see whether your result matches one of the answer choices,

or

Substitute the coordinates of either given point into the answer choice equation you think is correct and determine whether or not the resulting equation is true.

Answer 13

Please dispense with (throw away) the "I'm not good at math" excuse. You can become better at math through time and practice, if you wish.

Answer 14

"i think i got it. Is it y=3x+2" Pick one of the two given points. x=? y=?

Substitute these values into y=3x+2. Is the resulting equation now true or false?

If true, then y=3x+2 is correct; if false, it is not correct.

Answer 15

I need to get off the 'Net now, but I believe you now have enuf info on which to select the correct answer. Good luck!

Answer 16

ok thanks