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write the equation of the line with slope -1/2 and y- intercept ( 0, 3)

2007-07-13 07:14:55 · 10 answers · asked by sherri c 1 in Science & Mathematics Mathematics

10 answers

Eq. of a line is y =mx + c
m = slope = -1/2 , c = y-intercept = 3.

y = -1/2 (x) + 3

2007-07-13 07:17:45 · answer #1 · answered by Anonymous · 0 0

The equation for a line is in the format:

y = mx + b

where m is the slope and b is the y-intercept. You have been given that the slope is -1/2 and the y-intercept is (0,3) which means it crosses the y-axis where y = 3. So, you write the equation as:

y = mx + b (m = -1/2 and b = 3)

y = (-1/2)x + 3

2007-07-13 14:29:16 · answer #2 · answered by nona 3 · 0 0

Equation for slope - y =mx + c

Slope=M, so therefore -1/2 is the slope
Y intercept=C, so therefore 3 is the y intercept

y = -1/2 (x) + 3

2007-07-13 14:25:44 · answer #3 · answered by Blondie4321 2 · 0 0

The equation for a line is y = mx+b where:

m = slope
b = y-intercept (the y-intercept is the coordinate of y when x=0)

So your equation is:

y = -1/2x + 3

2007-07-13 14:18:24 · answer #4 · answered by Andrew 4 · 0 0

equation of a straight line is Y = mX + c, where m is the slope and c is the y-intercept, with Y as the y-axis and X as the x-axis.

hence, the equation of the line is Y = -1/2x + 3

2007-07-13 14:34:02 · answer #5 · answered by Anonymous · 0 0

These kinds of problems are solved using the equation
y=mx + b, where m is the slope and b is the intercept.

You know that when x=0, y=3. Plugging that in:
y=mx + b becomes
3 = -0.5 times 0 + b
So, 3 = 0 + b
Which means that b=3.

Now, we know the equation:
y = -0.5x + 3

2007-07-13 14:31:35 · answer #6 · answered by Ken 3 · 0 0

to write a slope intercept form y = mx + b, you need the slope and y-intercept.

m = slop
b = y-intercept

they give you both, just plug them in

y = (-1/2)x + 3

2007-07-13 14:19:30 · answer #7 · answered by      7 · 0 0

The form is y=mx+b

m is your slope
y=-1/2x+b

to solve for b
put in the point (0,3)

3=-1/2*0+b
3=b

therefor
y=-1/2x+3

2007-07-13 14:20:50 · answer #8 · answered by Anonymous · 0 0

the equation has the form y=-1/2 *x+b

you replace x by zero and y by 3 you obtain
3=1/2*0+b so b=3
and y= -0.5x +3 0.5=1/2

2007-07-13 14:20:06 · answer #9 · answered by maussy 7 · 0 0

what's this???? any ways answer for this is

x+2y-6=0

2007-07-13 14:21:15 · answer #10 · answered by ATN 1 · 0 0

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