Question

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

Answer 1

Change of form of the given equation will give the slope of the line $5y-2x=-3$. The given equation $5y-2x=-3$ is of the form $ax+by=c$. We change it to the form of $y=mx+k$ to find the slope m. Then, we place the line on the graph based on that.

Complete step by step solution:
We are taking the general equation of line to understand the slope of the line $5y-2x=-3$.
The given equation $5y-2x=-3$ is of the form $ax+by=c$. Here a, b, c are the constants.
We convert the form to $y=mx+k$. m is the slope of the line.
So, converting the equation we get
$\begin{aligned} & 5y-2x=-3 \\\ & \Rightarrow 5y=2x-3 \\\ & \Rightarrow y=\dfrac{2x-3}{5}=\dfrac{2}{5}x-\dfrac{3}{5} \\\ \end{aligned}$
This gives that the slope of the line $5y-2x=-3$ is $\dfrac{2}{5}$.
We need to find the y intercept, and x-intercept of the line $5y-2x=-3$ to plot in the graph.
For this we convert the given equation into the form of $\dfrac{x}{p}+\dfrac{y}{q}=1$. From the form we get that the x intercept, and y intercept of the line will be p and q respectively.
The given equation is $5y-2x=-3$. Converting into the form of $\dfrac{x}{p}+\dfrac{y}{q}=1$, we get
$\begin{aligned} & 5y-2x=-3 \\\ & \Rightarrow \dfrac{-2x}{-3}+\dfrac{5y}{-3}=1 \\\ & \Rightarrow \dfrac{x}{{}^{3}/{}_{2}}+\dfrac{y}{{}^{-3}/{}_{5}}=1 \\\ \end{aligned}$
Therefore, the x intercept, and y intercept of the line $2x+y=5$ is $\dfrac{3}{2}$ and $\dfrac{-3}{5}$ respectively.
The intersecting points for the line $5y-2x=-3$ with the axes will be $\left( \dfrac{3}{2},0 \right)$ and $\left( 0,-\dfrac{3}{5} \right)$.

Note: A line parallel to the X-axis does not intersect the X-axis at any finite distance and hence we cannot get any finite x-intercept of such a line. Same goes for lines parallel to the Y-axis. In case of slope of a line the range of the slope is 0 to $\infty$.