Determine the slope amd y-intercept of the graph: 3x + y = 8.
2007-07-24 03:30:30 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The equation may be written:
y = -3x + 8
That means the slopeis -3, and the y-intercept is 8.
2007-07-24 03:33:35 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Slope-intercept form is:
y = mx + b, where m = slope and b is y-intercept.
So, write your equation in that form and see what values you have for m and b. This is rather simple, as you just have to subtract the 3x to the right side:
3x + y = 8
y = -3x + 8
So, we see that m = -3 and b = 8. So, your slope is -3 and the y-intercept is 8.
2007-07-24 10:33:27 · answer #2 · answered by C-Wryte 4 · 0⤊ 1⤋
3x + y = 8.
y = -3x + 8
Slope = -3
y-intercept = 8
2007-07-24 10:34:35 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
the common eqn for a line is y = mx + b where m is the slope and b is the y-int..
in your case: solve for y
y = -3x + 8
slope = -3
y-int = 8
2007-07-24 10:33:50 · answer #4 · answered by miggitymaggz 5 · 0⤊ 0⤋