Students have a choice between taking a test on paper or on the computer. Mrs. Gazi graphed the relationship between the number
of students taking the test on the computer and the number of test pages she would need to print.
(graph below)
What feature of the graph represents how many pages Mrs. Gazi would need to print if none of the students take the test on the computer?
a) slope
b) x-intercept
c) y-intercept
d) none of the above
(graph below)
What feature of the graph represents how many pages Mrs. Gazi would need to print if none of the students take the test on the computer?
a) slope
b) x-intercept
c) y-intercept
d) none of the above
2 answers:
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Answer:
an isosceles right triangle
Step-by-step explanation:
The square of the length of a side can be found from the distance formula:
d^2 = (x2-x1)^2 +(y2-y1)^2
The square of the length of WX is ...
WX^2 = (-3-(-10))^2 +(-1-4)^2 = 49+25 = 74
The square of the length of XY is ...
XY^2 = (-5-(-3))^2 +(11-(-1))^2 = 4 +144 = 148
The square of the length of YW is ...
YW^2 = (-10-(-5))^2 +(4 -11)^2 = 25 +49 = 74
The sum of the squares of the short sides is equal to the square of the long side, so this is a right triangle. The squares of the short sides are equal, so this is an isosceles right triangle.
