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Anonymous

Find the slope and y-intercept of y=-3/5x-2?

Find the slope and y-intercept of y=-3/5x-2

This is negative three fifths minus two

I can’t understand the concept of finding the slope and the y intercept, can someone explain it to me? I would greatly greatly appreciate it. This is my weakest part in math, and I’m lost and our reading doesn’t do mush for us.

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Anonymous

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y=mx+b is the basic form

mx is the slope, sooo —> -3/5 is the slope

b is the y intercept sooo –>-2 is the y int

to graph it you mark a point on the y axis on 2. then you go up three and 5 to the left

1

Tom D
Begin with a graph that looks like a large plus sign. The horizontal line of the graph is the “X-axis” & the vertical line of the graph is the “Y-axis”. Remember that although the graph you draw is tiny, both the horizontal and vertical lines are meant to go on forever in both directions. That’s the definition of a line as opposed to, for example, a line segment. Any straight line not parallel with either axis must cross both axes somewhere. (Don’t believe me? Try drawing a line that doesn’t.) The equation you presented describes a third straight line. The point along that straight line where it crosses the Y-axis is called the “Y-intercept”. We measure its quantity as the distance away from the X-axis. Determining that distance is easy, because the variable “x” always equals 0 at the Y-intercept. Therefore, when you substitute 0 for x in the equation you gave (i.e. y=-3*0/5-2) and solve for “y”, you get -2, which is the Y-intercept. Slope, meanwhile, equals rise over run. So, it refers to how steep the line described by your equation is. A line that is vertical (like the Y-axis) has a steepness (a.k.a. slope) of infinity (or negative infinity). A line with a steepness of 0 runs horizontally, like the X-axis. Your line’s steepness is -3/5. How do I know that? Two ways: (A) The long way: what’s “y” equal to when x=1? Answer: -2.6. What did we say y equaled when x=0? Answer: -2. So what’s the change in the value of y for your line when x changed from 0 to 1? Solution: [-2.6-(-2)] / [1 – 0] = -0.6 = -3/5. Key point there: the numbers must be written in the order in which they are paired. For instance, 1 pairs with -2.6, so -2.6 got put first in the numerator (because it represents a “y” value–or a part of the “rise”) & 1 therefore had to be written first in the denominator. The numbers could’ve been written backwards too, just so long as the pairings are preserved: [-2 – (-2.6)] / [0 – 1] = -0.6 = -3/5. (B) Shortcut: Notice that when you have the equation of your line written with the variable “y” all by itself on one side, the slope of the line is the number just before the variable “x”. I hope that helps!
0

Anonymous
The slope is the change in y divided by the change in x. The slope is -3/5 (itsthe x coordinate). Try two points on the line, you should get -3/5.

The y-intercept is -2, that is where the line crosses the y-axis. You can think of this in another way. The y-intercept is when the x value is zero. Substitute zero for x, this makes y = -2, which is the y-intercept.

1

gobiasindustries
The slope is -3/5 and the y-intercept is -2.
0

?
the slope is the number infront of the x

so in this equation it is -3/5

the slope is the steepness of the line.

for the y-intercept you set x = 0

y = -3/5(0) – 2

solve and you get y = -2

0

~*LEAH*~
the slope is -3/5
0

ASKER1213054295
hehe its easy. think of it this way

Y=MX+B

so

Y=3/5-2

Now, the Y intercept is always B, which in this case is (-2).

The slope is always M -3/5, which means go three up and five over on a graph, starting at (0,0)

2

t m
i had a dog named slope once
1

Thunder4
slope (mx)= -3.5(x_

y-intercept (b) = -2

use the formula y=mx+b…………….mx=the slope b=y-intercept

0

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