slope 4;point(1,2)?

2 ⤊

2007-11-15 18:22:43 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

y - 2 = 4 (x - 1)
y = 4x - 4 + 2
y = 4x - 2 is equation of line.

2007-11-15 18:51:21 · answer #1 · answered by Como 7 · 2⤊ 1⤋

take a second point x,y on the line in addition to 1,2

slope = rise/run = 4 = (2-y)/(1-x)

2-y = 4(1-x)
2-y = -4x + 4
y = 2 + 4x - 4
y = 4x - 2

2007-11-16 02:31:31 · answer #2 · answered by theanswerman 3 · 0⤊ 1⤋

y-2 = 4(x-1)
y-2 = 4x - 4
y = 4x - 2

2007-11-16 02:25:56 · answer #3 · answered by Philo 7 · 0⤊ 1⤋

y=4x-2

2007-11-16 02:38:00 · answer #4 · answered by Anonymous · 0⤊ 1⤋

y = mx + c (m=gradient, c= y-intercept)

y=4x+Â½

2007-11-16 02:29:42 · answer #5 · answered by Anonymous · 0⤊ 0⤋