2007-09-06 16:13:31 · 5 answers · asked by texan3715 1 in Science & Mathematics ➔ Mathematics
y = 3x + 4
2007-09-06 23:03:38 · answer #1 · answered by Como 7 · 2⤊ 0⤋
Since y= mx+c
where y is the y coordinate, m is the gradient (slope), x is the x-coordinate and c is the y-intercept.
Hence,
y = mx +c
(4) = 3(0) +c
You need to find the y-intercept,
c = 4
Thus, the eqn is
y = 3x +4
2007-09-06 23:20:31 · answer #2 · answered by ♪£yricảl♪ 4 · 0⤊ 0⤋
a) by slope-intercept form, you can do this in one shot:
y = 3x + 4.
b) by point-slope form do:
(y-4)/(x-0) = 3, simplify
(y-4)/x = 3, cross-multiply
y-4 = 3x, move 4 over
y = 3x + 4.
2007-09-06 23:20:27 · answer #3 · answered by pbb1001 5 · 0⤊ 0⤋
equation: y = mx + b
m = slope
plug in the x and the y and of course the slope to find b
4 = 3(0) + b
4 = 0 + b
b = 4
So, your equation: y = 3x + 4
2007-09-06 23:21:52 · answer #4 · answered by Brenda 2 · 0⤊ 1⤋
y = 3x + 4
2007-09-06 23:19:51 · answer #5 · answered by bob135 4 · 0⤊ 0⤋