Question

Which of the following is the equation of a line that passes through the points (2,5) and (4,3)?
A. y = x + 7
B. y = -x + 7
C. y = 2x + 5
D. y = -2x + 5

Answer 1

would i do y2-y1/x2-x1 for this type of problem?

Answer 2

Yes, you would find the slope first.

Answer 3

3-5 / 4 - 2 = -1
Then plug in the values of either equation to get the equation of those two coordinates into point-slope form.
y - y1 - m(x- x1)

Answer 4

y-y1 = m(x-x1) *

Answer 5

y=-x+7?

Answer 6

y - 5 = -1(x-2)
y - 5 = -x + 2
y = -x + 7
It says y1 and x1 so always use the first pair of coordinates , i'm rusty with algebra..

Answer 7

Yeah.

Answer 8

thanks!!