Question

Draw the graph of the polynomial $f\left(x\right)=2x-5$. Also, find the coordinates of the point where it crosses X-axis.

• A. $\frac{2}{5}$
• B. $\frac{5}{2}$
• C. $0$
• D. None of these

Answer 1

The correct option is B $\frac{5}{2}$

Let $y=2x-5$.
The following lists the values of $y$ corresponding to different values of $x$.
When $x=1$, then $y=2\left(1\right)-5=-3$
When $x=4$ then $y=2\left(4\right)-5=-3$

		The points $A(1,-3)$ and $B(4,3)$ are plotted on the graph paper on a suitable scale. A line is drawn passing through these points to obtain the graphs of the given polynomial

It crosses X-axis at point $(2.5,0)$.