Question

Determine the equation of the line that passes through the points (2, -5) and (7, 0). Use the form y = mx + b.


A. y = x + 7 B. y = 5x + 5
C. y = 2x - 5 D. y = x - 7

Answer 1

do oyu understand the form of the equation?

m is the slope of the line and b is the point where it crosses the y axis

are oyu ok with this for a start?

Answer 2

yes

Answer 3

do you know a formula for 'slope'?

your points are
x1=2 y1= -5
x2=7 y2= 0

Answer 4

so would the answer be c

Answer 5

how did oyu get that?

the formula for slope is
\[slope = \frac{ y _{2} - y _{1} }{ x _{2} -x _{1} }\]

Use the values I gave you above and that equation to work out what the slope is

Answer 6

i'm working it out

Answer 7

the answer is b right

Answer 8

work out the slope

Answer 9

i did

Answer 10

What value did you get for slope?

Answer 11

\[slope =\frac{-5 }{ 5 }\]

Answer 12

that's wat i gt

Answer 13

that is not quite correct

what is 0 - (-5)?

Answer 14

5

Answer 15

so what is the slope?

Answer 16

y = 5x + 5

Answer 17

Please just answer the questions - they are guiding you to work out the answer properly

you said the slope was -5/5 but that is not correct

you said 0-(-5) = 5 which IS correct

so just answer 'what is the slope'?

Answer 18

B is not correct