How do you find the slope given 5y - 2x = -35y2x=3?

3 Answers
Mar 20, 2018

m=2/5m=25

Explanation:

Given the equation of a line, all we need to do is rearrange it into terms of y=mx+by=mx+b

5y-2x=-35y2x=3
5y=2x-35y=2x3 Add -2x to both sides to get yy by itself
y=2/5x-3/5y=25x35 Divide all terms by 5

Now that the equation is in terms of slope-intercept, with the slope being mm in y=mx+by=mx+b, you can find the slope.

Mar 20, 2018

See a solution process below:

Explanation:

We can multiply each side of the equation by color(red)(-1)1 to put the equation in Standard Linear Form. The standard form of a linear equation is: color(red)(A)x + color(blue)(B)y = color(green)(C)Ax+By=C

Where, if at all possible, color(red)(A)A, color(blue)(B)B, and color(green)(C)Care integers, and A is non-negative, and, A, B, and C have no common factors other than 1

color(red)(-1)(5y - 2x) = color(red)(-1) * -31(5y2x)=13

(color(red)(-1) xx 5y) - (color(red)(-1) xx 2x) = 3(1×5y)(1×2x)=3

-5y - (-2x) = 35y(2x)=3

-5y + 2x = 35y+2x=3

color(red)(2)x + color(blue)(-5)y = color(green)(3)2x+5y=3

The slope of an equation in standard form is: m = -color(red)(A)/color(blue)(B)m=AB

Substituting gives:

m = (-color(red)(2))/color(blue)(-5) = 2/5m=25=25

Mar 20, 2018

slope=2/525

Explanation:

So you're going to want to get it into mx+b=ymx+b=y form, where mm is the slope and bb is the xx intercept.

To rearrange the equation:
5y-2x=-35y2x=3
add 2x2x to each side, which cancels out -2x2x from the left side
5y=-3+2x5y=3+2x
now divide each side by 55, which crosses out the 55 in 5y5y
y=(-3+2x)/5y=3+2x5

You now have the correct arrangement of the equation and can even flip -33 and 2x2x to match the form of the equation you want it in

y=(2x-3)/5y=2x35

Now since you have the equation being divided by 55, you have to divide both 22 and 33 by 55, making your new equation:
y=(2/5)x-(3/5)y=(25)x(35)

and following the equation we can now see that mm, which is the slope, is equal to 2/525.