SOLUTION: Determine if the point (1,3) is on the line Y=2x-5 Determine the slope of the line 3x-y+9=0 Can someone please explain how to do these questions,basic steps please.

Question 1031337: Determine if the point (1,3) is on the line Y=2x-5
Determine the slope of the line 3x-y+9=0
Can someone please explain how to do these questions,basic steps please.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Determine if the point (1,3) is on the line Y=2x-5
The point is in (x.y) forfat. x = 1, y = 3
Sub for them in the equation, see if it's equal.
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y = 2x-5
3 =? 2*1 - 5
3 =? -3
Not eqaul, not on the line.
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Determine the slope of the line 3x-y+9=0
Put it in slope-intercept form.
That means solve for y.
3x-y+9=0
3x+9 = y
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The slope (called m) is the coefficient of x in this form.
Slope m = 3

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