Question:

The slope of the straight line$\frac{ x}{10 }$-$\frac{y }{4 }$ = 3 is

Updated On: Jun 7, 2024
  • $\frac{5}{2 }$
  • $\frac{ -5}{ 2}$
  • $\frac{ 2}{ 5}$
  • $\frac{ -2}{ 5}$
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The Correct Option is C

Solution and Explanation

We have, $\frac{x}{10}-\frac{y}{4}=3$ $\Rightarrow 2 x-5 y=60$ $\Rightarrow 5 y=2 x-60$ $\Rightarrow y=\frac{2}{5} x-12 \,.......(i) $ Compare E (i) with $y=m x+c$, we get $m=\frac{2}{5}$. Thus, slope of straight line $=\frac{2}{5}$.

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Concepts Used:

The Slope of a Line

A slope of a line is the conversion in y coordinate w.r.t. the conversion in x coordinate.

The net change in the y-coordinate is demonstrated by Δy and the net change in the x-coordinate is demonstrated by Δx.

Hence, the change in y-coordinate w.r.t. the change in x-coordinate is given by,

\(m = \frac{\text{change in y}}{\text{change in x}} = \frac{Δy}{Δx}\)

Where, “m” is the slope of a line.

The slope of the line can also be shown by

\(tan θ = \frac{Δy}{Δx}\)

Read More: Slope Formula

The slope of a Line Equation:

The equation for the slope of a line and the points are known to be a point-slope form of the equation of a straight line is given by: 

\(y-y_1=m(x-x_1)\)

As long as the slope-intercept form the equation of the line is given by:

\(y = mx + b\)

Where, b is the y-intercept.