Question

Quick Question... MEDAL!!!


What is the equation in point-slope form of the line passing through (4, 0) and (2, 6)?


y = 4x − 2
y = 2x − 4
y = −3(x − 4)
y = 3(x + 4)

Answer 1

What is the equation of a horizontal line passing through the point (−3, 8)?


x = −3
y = 8
x = 5
y = −11

Answer 2

For the second one I think it's A. Right?

Answer 3

The first one is D.

Answer 4

no - not 'right'

it's a horizontal line

what is true about the y value for all points on a horizontal line?

Answer 5

for the first one - the answer is not D

Answer 6

Hmmm

Answer 7

for the fist one:

you have 2 points (as I sketched above)

the slope is calaculated by subtracting the the y values , subtracting the x values and dividing

what is the slope of the line in the first one?


in the second one:

it's a horizontal line

what is true about the y value for all points on a horizontal line?

Answer 8

For the second one:
all values of x give the same value of y .

Answer 9

y=8 right?

Answer 10

ok good

so y is a constant

the point (-3, 8) has what y value?

(it lies on the line so all points have the same y value)

Answer 11

yes y=8 is correct answer

Answer 12

:D Thx...
for the first one:
the slope is 1

Answer 13

\[slope = \frac{ y _{2} - y _{1}}{ x _{2}- x _{1} }\]

the slope is not 1

Answer 14

-1

Answer 15

no

use the equation above