the line crosses at positive 5, (the point is (0,5)) because that is what the y-intercept is on your equation. the equation y=3x+5 is in slope intercept form. that means its in the form y=mx+b, where m=the slope, and b=the y-intercept. in this case, b is positive 5.
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That is the equation of a line. y = m*x + b x is a changing variable to plot on the x-axis. m is the slope of the line, or how slanted the line is. b is the y-intercept, or where the line crosses on the y-axis.
The second
-1.83 . . . . . and . . . . . -1.82
2x - 3y = 2The graph of this equation is a straight line, which crosses the y-axis where [ y = -2/3 ]and has a slope of 2/3 .x + 2y = 8The graph of this one is also a straight line, which crosses the y-axis where [ y = 4 ]and has a slope of -1/2 .
Yes, it crosses at (0.23,0) and (1.43,0).