Question

Question 5 (Multiple Choice Worth 1 points)



What is the slope of the line between (-4, 4) and (-1, -2)?

1

2

-2

-1

Question 6 (Multiple Choice Worth 1 points)



What is the slope of the line x = -5?

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0

-5

5

Question 7 (Multiple Choice Worth 2 points)



Select the correct inequality for the graph below.
A dotted line passing through points (0, 2) and (1, 0) has shading below.

y > -2x + 2

y ≥ -2x + 2

y < -2x + 2

y ≤ -2x + 2

Answer 1

For the first question is pretty easy. You could directly plot and do a short calculation, since the slope is equal to dy/dx or diviation of y divided by deviation of x. In other word, slope is
\[\Delta y/\Delta x\] So that, from (-4, 4) and (-1, -2) you could make a triangle as shown below,

Then determine the deviation on y [ 4-(-2)= 6 ] and deviation on x [-2-(-4)=2 ].
The slope is \[\Delta y/\Delta x=6/2=3\]