asuna2222
contestada

Look at the graph shown: A coordinate plane is shown. A line passes through the point -4 comma 1 and through the y-axis at 4. Which equation best represents the line? y = 3 over 4. x + 4 y = 4 over 3.x + 4 y = 4x + 3 over 4. y = 4x + 4 over 3.

Respuesta :

amathzing
Well in order to find the equation you are looking for you first must find the slope of the line.  Since it gives you two points at (-4, 1) and at (0, 4), use these points to find the slope.  

Slope = (change in y)/(change in x) = (4 - 1)/ (0 - -4) = 3/4 

Since you already know the y intercept at (0, 4) you can now put these values in to get your equation.  

y = mx + b where m is slope and b is y-intercept.

y = (3/4)x + 4
mergl
(0,4),(-4,1)
y=mx+b, m=(y2-y1)/(x2-x1)
m=(4-1)/(0-(-4))
m=3/4
b=4
y=3/4x+4