Find the y-intercept of the line joining two points (1, 3) and (3, 5).
Equation of line joining points $$(x_1,y_1)$$ and $$(x_2,y_2)$$ is : $$(y-y_1)=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$$
Points (1, 3) and (3, 5)
=> Equation : $$(y-3)=\frac{5-3}{3-1}(x-1)$$
=> $$y-3=x-1$$
=> $$y=x-1+3$$
=> $$y=x+2$$
Comparing with equation $$y=mx+c$$, $$m$$ is the slope and $$c$$ is the y-intercept.
$$\therefore$$Â y-intercept of the line joining two points (1, 3) and (3, 5) =Â 2
=> Ans - (C)
Create a FREE account and get:
