Which of the following best describes the technique used to graph the equation, y = -2x + 8, using slope and y-intercept?
a)Mark a point at 8 on the y-axis, move upward 2 and right 1, mark the point and draw the line.
b) Mark a point at -2 on the y-axis, move downward 8 and right 1, mark the point and draw the line.
c) Mark a point at -2 on the y-axis, move upward 8 and right 1, mark the point and draw the line.
d) Mark a point at 8 on the y-axis, move downward 2 and right 1, mark the point and draw the line.

Question

Which of the following best describes the technique used to graph the equation, y = -2x + 8, using slope and y-intercept?	
a)Mark a point at 8 on the y-axis, move upward 2 and right 1, mark the point and draw the line.
b) Mark a point at -2 on the y-axis, move downward 8 and right 1, mark the point and draw the line.
c) Mark a point at -2 on the y-axis, move upward 8 and right 1, mark the point and draw the line.
d) Mark a point at 8 on the y-axis, move downward 2 and right 1, mark the point and draw the line.

anonymous · Answer

well for the moving up and so forth you would use the y-int and x-int as a basis.

anonymous · Answer

What? I mean, I'm thinking it's C.

johnweldon1993 · Answer

the y-intercept is...8...so you make a point at 8 first....then what?

anonymous · Answer

you are right, it is C but do you know how we can test it?

johnweldon1993 · Answer

Nooooo no it's not C

anonymous · Answer

are you sure?

johnweldon1993 · Answer

if it were C the y-intercept would be -2 and the equation will be  y = 8x + -2

johnweldon1993 · Answer

remember the  slope intercept form is y=mx + b

m is the slope...and b is the y-intercept

anonymous · Answer

u are right, I forgot about the the y-axis part where you marked it stays there.

johnweldon1993 · Answer

right...so okay @sarah.radke 

you have an equation

y = -2x + 8

it looks just like y = mx + b right?

in that equation m is slope...and b is y-intercept

so what are YOUR slope and y-intercept?

anonymous · Answer

also remember it's a negative slope so you always want it to looking from High to Low, sloping downwards.

anonymous · Answer

Oh! So -2 is the slope and the y intercept is 8?

johnweldon1993 · Answer

|dw:1362784752173:dw|

yes correct....and remember what your slopes look like

johnweldon1993 · Answer

so now what would you do to graph your equation? what would you find and plot first?

anonymous · Answer

Oohh, okay ^.^ So it's D right? Downward two and mark 8 on the y axis?

johnweldon1993 · Answer

yes you are correct :)

anonymous · Answer

Yuuussss!!! Haha thankyou so much! Gah omg I love you!

johnweldon1993 · Answer

haha anytime :) Feel free to fa......nvm haha you just did fan me haha....i'll be glad to help with anything you need :)

anonymous · Answer

Haha alrightyy, thanks again!!

johnweldon1993 · Answer

no problem :)