Question

find the slope of the graph of the following: 9x-3y=15

Answer 1

  Slope = 3  x-intercept = 5/3 = 1.66667  y-intercept = 5/-1 = -5.00000

Answer 2

Answer:

Equation of line is given by:

y = mx+b; ......[1]  where m is the slope and b is the y-intercept.

Given the equation of a line: $9x-3y =15$

Subtract 9x from both sides we get;

$9x-3y-9x =15-9x$

Simplify:

$-3y =15-9x$

or

$-3y =-9x+15$

Divide by -3 both sides we get;

$y = \frac{-9x+15}{-3}$

or

$y = \frac{-9x}{-3} + \frac{15}{-3}$

Simplify:

$y = 3x - 5$

On comparing with equation [1] we have;

m = 3

Therefore, the slope of the graph of the following  $9x-3y =15$ is, 3