1. f(x)= -2x+3
2. 2x+7y=14
3. 2/5X + y/4= 1
2006-10-16 15:02:31 · 5 answers · asked by D M 1 in Science & Mathematics ➔ Mathematics
1. slope=-2
2.-2/7
3. -8/5
2006-10-16 15:08:32 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I will do the first one only.
First of all, f(x) is the same as y and vice-versa.
Secondly, keep in mind that the y-intercept form, is
y = mx + b where m is the slope and b is the y-intercept. The y-intercept form can also be written f(x) = mx + b since y = f(x) and vice-versa. Get it?
QUESTION 1:
f(x) = -2x + 3.
What do you think the slope is? It is the number that is standing in the m place? See it? Since m = the slope in y = mx + b, we can say that the slope for question 1 is -2.
You do the rest.
Guido
2006-10-16 22:11:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1. the slope is -2
2. -2/7
3. -8/5
2006-10-16 22:06:30 · answer #3 · answered by chococat 4 · 0⤊ 0⤋
first you have to put it in y = mx + b form, whereas m stands for the slope
1.)
f(x) = -2x + 3
Slope = -2
2.)
2x + 7y = 14
7y = -2x + 14
y = (-2/7)x + 2
Slope = (-2/7)
3.)
(2/5)x + (y/4) = 1
8x + 5y = 20
5y = -8x + 20
y = (-8/5)x + 4
Slope = (-8/5)
2006-10-16 22:17:24 · answer #4 · answered by Sherman81 6 · 0⤊ 0⤋
slope = rise / run
1. slope=-2
2.-2/7
3. -8/5
2006-10-16 22:10:56 · answer #5 · answered by f1avor_f1av 3 · 0⤊ 0⤋