Question 389461
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Hi,         
 4x + 5y = 8  This type of equation always represents a line graphically.
Cartesian plane has an x and y axis.  x axis labeled on graph
Question being asked is where does this line cross the x-axis:
The line will cross the x axis when y  = 0
4x + 5y = 8  when y = 0
4x + 5*0 = 8
 4x = 8
  x = 2
x-intercept is Pt(2,0) (When naming points, the x value is placed first)
Pt(1,4/5) and Pt(3,-4/5) are a couple more points on the line.
these found by substituting x value into the equation.
{{{drawing(300,300, -6, 6, -6, 6, grid(1),
circle(2, 0,0.3),
circle(1, .8,0.3),
circle(3,-.8,0.3),
graph( 300, 300, -6, 6, -6, 6, -.8x + 8/5))}}}