Math Question?

Question

1.Find the slope of the line passing through the following pairs of points. (2,3) and (4,7)

2.Find the slope of the line passing through the following pairs of points.(-3,-1) and (-2,-4)

ok for number one i have 2
and for number 2 i have -3

is that right if not can u please explain..And show me how you got the answer.

Answer 1

The slope of the line passing through the folowing pairs of points (x1,y1) and (x2,y2) is:
m(slope)=(y2-y1)/(x2-x1)
(x1,y1),(x2,y2)→(2,3),(4,7)
with y2=7, x2=4 ,x1=2 and y1=3
then,
m=(7-3)/(4-2)=4/2
m (slope)=2
and
for (-3,-1), (-2,-4)
with y2=-4, x2=-2, y1=-1 and x1=-3
m=(-4-*-1)/(-2-*-3)=(-4+1)/(-2+3)
m=-3/1 or
m=-3

Answer 2

If you have two points, (x1,y1) and (x2,y2), the line connecting them has slope (y2-y1)/(x2-x1). Whichever you identify as 1 or 2 is not material as long as you follow through. I like to select the point 2 as the one with the most positive y.

So.... in #1 slope = (7-3)/(4-2) or 2 COOL
In #2, slope (-1-(-4))/(-3 -(-2))= 3/-1 or -3 COOL

Answer 3

well, i really hate this topic in math.. i am taking this topic in the first year[high school]
-now for the answer-

there is a formula to get the slope of a line.

m=y2-y1 divided by x2-x1

For number 1 your x1 and y1 ( 2,3). your x2 and y2 is (4,7)

7-3=4
4-2=2
m=2

for number 2 your x1 anmd x2 are (-3,-1) and your y1 and y2 (-2,-4)

m=-3

Answer 4

Slope is rise over run and you are kerrrekt!

Answer 5

I think you did it right. I got the same thing. :-)

Answer 6

i bet you are in the 7th grade.

Answer 7

f(x)-f(x)/x-x