Question

What is the equation of the line that passes through (1, 3) and (-2, -3)?
y = -2x + 1

y = 2x + 1

y = 1/2 x - 1

y = -1/2 x + 1 correct?

Answer 1

Can you find the slope of the line using the two given pioins?

Answer 2

-6/-3

Answer 3

yes, simplify this slope....

Answer 4

Now reduce the fraction. You can divide both the numerator and denominator by -2.

Answer 5

1/-2

Answer 6

mathstudent, you meant -3.

Answer 7

No. First, negative divided by negative equals positive, so -6/-3 = 6/3.
What is 6/3 = ?

Answer 8

Yes, correct, thanks.

Answer 9

is that it?

Answer 10

What is 6 divided by 3 ?

Answer 11

2

Answer 12

\(slope = m = \dfrac{-3 - 3}{-2 - 1} = \dfrac{-6}{-3} = \dfrac{6}{3} = 2\)

Answer 13

Correct. the slope is 2.

The slope-intercept form of the equation of a line is

y = mx + b

All your choices are in this form. Ok?

Answer 14

m, the number that multiplies x, in the slope-intercept form is the slope of the line. You know the line has a slope of 2. Which is the only choice that has a slope of 2?

Answer 15

B

Answer 16

correct

Answer 17

Thanks. can you help me with another equation?