Question

Write an equation of the line that passes through (8, 3) and (4, 3).
A. y = 3
B. y = 4x + 3
C. y = 4
D. y = 3x

Answer 1

first find the slope of this line:
\[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]

Answer 2

i think it's C not sure if that's right

Answer 3

(y2-y1)/(x2-x1)
so 8 = x1 , 3 =y1, 4=x2, 3=x2

Then input into y=mx+b and use b=3 for the y intercept

Answer 4

3=y2*

Answer 5

\[m=\frac{ 3-3 }{ 4-8 }=0\]

Answer 6

yup!

Answer 7

so ? would that just be D?

Answer 8

?

Answer 9

a method I'd recommend for this question is to plot the points



and then you would see its a horizontal line... and would avoid the need for calculations...

and D is incorrect

you need to know horizontal lines have a zero slope...

Answer 10

what would it be ?