2007-07-13 21:07:30 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
y = mx + b
3 = -2(0) + b
3 = b
y = -2x + 3
2007-07-13 21:11:16 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Sounds like point-slope or intercept form to me!
y=mx+b we just read off m=-2 and b=3, so
y=-2x+3
You can get the same answer from point-slope by
y-3 = -2(x-0)
2007-07-13 21:20:35 · answer #2 · answered by Mich Ravera 3 · 0⤊ 0⤋
y= mx + b use x=2 y=1 and m=3 in the equation to solve for b 1=3(2)+b so b = -5 so the equation in the form requested is y = 3x-5 remember that the slope and the y-intercept are CONSTANT in a linear equation, and any point with coordinates (x,y) that lies on the line must satisfy its equation
2016-05-17 08:58:45 · answer #3 · answered by val 3 · 0⤊ 0⤋
Wow - you better get on that studying....
-2 = m = the slope
(0,3) is the y-intercept where the line crosses the y-axis.
y at that point = 3 = b
y = mx + b
y = (-2)x + 3
y= -2x +3
2007-07-13 21:11:53 · answer #4 · answered by bedbye 6 · 0⤊ 0⤋
With these problem use the point- slope formula
Given:
m=-2
P(0,-3)
point slope formula:
y-y1=m(x-x1)
where x1 and y1 are the point coordinates
By direct substitution
y-3=-2(x-0)
y-3=-2x
y=-2x+3
EASY!!
2007-07-13 21:16:57 · answer #5 · answered by ptolemy862000 4 · 0⤊ 0⤋
-2=(3-y)/(0-x) 2x=3-y y=3-2x
2007-07-13 21:15:10 · answer #6 · answered by 037 G 6 · 0⤊ 0⤋
Sammi this ur 4th similar question...
these r very simple questions, please try them by yourself at least once. u will understand how to do it ... but first try to solve them urself. Maths is learnt best by practice than anything else.
2007-07-13 21:12:45 · answer #7 · answered by Vipin A 3 · 0⤊ 0⤋