Unit Rates & Proportions Unit Test
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Question
Use the image to answer the question.
A coordinate plane shows four quadrants with both the x-axis and the y-axis ranging from negative 10 to positive 10 in increments of 2. Two points are plotted and joined by a line. The plotted points are as follows: left parenthesis 4 comma 9 right parenthesis, left parenthesis 5 comma 0 right parenthesis. A line connects the two plotted points and extends beyond the points in both directions.
Find the slope of the line given its graph.
(1 point)
Responses
−412
negative 4 Start Fraction 1 over 2 End Fraction
−9
negative 9
9
9
−19
negative Start Fraction 1 over 9 End Fraction
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To find the slope of a line, we can use the formula:
slope = (change in y)/(change in x)
In this case, we can see that the change in y is 9 - 0 = 9 and the change in x is 4 - 5 = -1.
Plugging these values into the formula, we get:
slope = 9/(-1) = -9
Therefore, the slope of the line is -9.