Write an equation for the linear function f(x) using the given information. ———————————————Using the points 2,0 & 4,3

Respuesta :

To find the equation in the form

[tex]y=mx+b[/tex]

the slope is defined by:

[tex]\begin{gathered} m=\frac{y2-y1}{x2-x1} \\ m=\frac{3-0}{4-2} \\ m=\frac{3}{2} \end{gathered}[/tex]

To find b you can replace any of the points on the equation an clear for b

(x,y)=(4,3)

[tex]\begin{gathered} y=\frac{3}{2}x+b \\ 3=\frac{3}{2}\cdot4+b \\ 3=6+b \\ 3-6=b \\ b=-3 \end{gathered}[/tex]

to check if the answer is correct replace 2 as x in the equation.

[tex]\begin{gathered} y=\frac{3}{2}\cdot2-3 \\ y=3-3 \\ y=0 \end{gathered}[/tex]

since the answer was 0 and point was 2,0 the equation is correct.