What is the slope of the line passing through the following points: ( -1, 5) , (4, -8)(−1,5),(4,−8)?

3 Answers
Don't Memorise
Apr 22, 2016

The slope =( - 13)/ ( 5)=−135

Explanation:

(-1 , 5) = color(blue)(x_1 , y_1)(−1,5)=x1,y1

(4 , - 8) = color(blue)(x_2 , y_2)(4,−8)=x2,y2

The slope is calculated using formula:

Slope =color(blue)((y_2 - y_1)/ (x_2 - x_1)=y2−y1x2−x1

=( - 8 - 5)/ ( 4 - (-1))=−8−54−(−1)

=( - 13)/ ( 4 + 1)=−134+1

=( - 13)/ ( 5)=−135

Don't Memorise
Apr 22, 2016

The slope =( - 13)/ ( 5)=−135

Explanation:

(-1 , 5) = color(blue)(x_1 , y_1)(−1,5)=x1,y1

(4 , - 8) = color(blue)(x_2 , y_2)(4,−8)=x2,y2

The slope is calculated using formula:

Slope =color(blue)((y_2 - y_1)/ (x_2 - x_1)=y2−y1x2−x1

=( - 8 - 5)/ ( 4 - (-1))=−8−54−(−1)

=( - 13)/ ( 4 + 1)=−134+1

=( - 13)/ ( 5)=−135

Don't Memorise
Apr 22, 2016

The slope =( - 13)/ ( 5)=−135

Explanation:

(-1 , 5) = color(blue)(x_1 , y_1)(−1,5)=x1,y1

(4 , - 8) = color(blue)(x_2 , y_2)(4,−8)=x2,y2

The slope is calculated using formula:

Slope =color(blue)((y_2 - y_1)/ (x_2 - x_1)=y2−y1x2−x1

=( - 8 - 5)/ ( 4 - (-1))=−8−54−(−1)

=( - 13)/ ( 4 + 1)=−134+1

=( - 13)/ ( 5)=−135

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