If a line with a slope of -2 bross the y-axis at (0,3), waht is the equation of the line.
My answer was y= -2x+3 can anyone explain what i did wrong ?

Question

If a line with a slope of -2 bross the y-axis at (0,3), waht is the equation of the line.
My answer was  y= -2x+3 can anyone explain what i did wrong ?

anonymous · Answer

@whpalmer4

whpalmer4 · Answer

Can you show me how you get that answer?

anonymous · Answer

y=mx+b slope intercept

whpalmer4 · Answer

$$y = -2x$$ part is correct

anonymous · Answer

Here are my choices, this is where i got a little confused
y − 2x = 3
-2y + 3x = 1
y + 3x = 2
y + 2x = 3

anonymous · Answer

the y intercept is where the line crosses through the right axis which was pinpointed at postivite 0,3 which is 3 as a whole number

31356 · Answer

Here is an example to refer to: http://www.algebra.com/cgi-bin/Equations.faq.question.84744.html

whpalmer4 · Answer

$y = -2x+3$ does go through the point $(0,3)$.  $$3 = -2(0)+3$$

Ah, maybe you screwed up when converting to one of those answer…

$$y = -2x+3$$If we add $2x$ to both sides:$$y+2x = -2x + 2x + 3$$$$y+2x = 3$$

anonymous · Answer

y axis*

whpalmer4 · Answer

y-intercept is just the value of y when x = 0.  it's just a number when referring to it in slope-intercept form (b), otherwise it is usually written as $(0,b)$

anonymous · Answer

ohhh ok sorry if i'm missing a couple of steps my online class requires me to teach myself lol i guess i forgot a couple of things while scanning down my notes ,thanks whpalmer4 huge help

whpalmer4 · Answer

you're welcome.  give me a shout if you ever need help understanding something, and I'll try to help you out.

anonymous · Answer

Sure thing bro thanks!