The
formula for the equation of a line is:
y=mx+c
Where:
y= the y coordinates
m= the slope
x= the x coordinates; and
c= the y intercept of the line
hence we can find the slope of each line by rewriting it in this form. So:
1. Y=-2x+9
So slope is -2
2. 3x-y=9
-y=9-3x
Or
y=-9+3x
This can also be written as:
y=3x-9
So slope is 3
3. 5x-10y+13=0
So:
-10y=-13-5x
Dividing:
-y=-13/10-5/10x
Shifting the negative sign:
y=13/10+5/10x
This can also be written as:
y=5/10x+13/10
So the slope is 5/10
formula for the equation of a line is:
y=mx+c
Where:
y= the y coordinates
m= the slope
x= the x coordinates; and
c= the y intercept of the line
hence we can find the slope of each line by rewriting it in this form. So:
1. Y=-2x+9
So slope is -2
2. 3x-y=9
-y=9-3x
Or
y=-9+3x
This can also be written as:
y=3x-9
So slope is 3
3. 5x-10y+13=0
So:
-10y=-13-5x
Dividing:
-y=-13/10-5/10x
Shifting the negative sign:
y=13/10+5/10x
This can also be written as:
y=5/10x+13/10
So the slope is 5/10
