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What is the slope of the line?
4, 1 & 1/2
idk how to do this math :/
|dw:1350139808849:dw| y=mx+b is the slope intercept form put values in it
Slope-intercept is basically a very short way of describing ANY straight line. It can be super useful in figuring out, say, how much money you make if you get paid an hourly wage.
The slope is "rise over run" or the ratio (fraction) of how far up or down the line goes for every bit it moves left or right.
In this case, for every "rise" of negative 3 (going down three) the line goes one to the right.
so -3, 1?
So slope = -3/1. Slope = -3 (because any number divided by 1 is itself).
well -3 / 1
Yup, that's the slope.
Now the INTERCEPT just means "what value of y does this line cross the y-axis" the intercept is literally JUST A NUMBER. :)
So look at your picture. What value of y does the line cross (or touch, or intercept, they all mean the same thing) the y-axis?
The slope intercept form of a line is y = mx + b where m is the slope (-3) and b is the intercept (4). Literally re-write that but instead of m write -3 and instead of b write +4 and you're done. :)
so, 4=-3x +4?
The second one.===> y=-3x+4 The crazy thing is... that describes the ENTIRE line. All the points on the line obey that equation. Question -- what is the value of Y on the line when X = 2? (look at your picture)