12 multiple-choice questions, progressively harder.
A and B have different first coordinates, and internal P has AP:PB=4:11AP:PB=4:11AP:PB=4:11. Which equation for signed horizontal changes follows?
Solution
Correct answer: B
The whole has fifteen ratio parts, of which AP uses four. Similarity transfers that fraction to the signed horizontal change.
The first coordinates differ, so the horizontal change is nonzero and these four factors give different changes.
An internal point has AP:PB=2:5AP:PB=2:5AP:PB=2:5. Which description locates it?
Correct answer: D
AP contains two of the seven parts in AB. Starting at A is part of the ordered ratio.
The endpoints are A(−6,3)A(-6,3)A(−6,3) and B(14,3)B(14,3)B(14,3). Find internal PPP with AP:PB=1:4AP:PB=1:4AP:PB=1:4.
Correct answer: A
The second coordinate stays 3. One fifth of the horizontal change is 4.
Let A(3,−10)A(3,-10)A(3,−10) and B(3,14)B(3,14)B(3,14). Find internal PPP with AP:PB=1:2AP:PB=1:2AP:PB=1:2.
Correct answer: C
The first coordinate remains 3. Use one third of the vertical change.
Which ordered ratio makes internal P the midpoint of distinct endpoints A and B?
Equal positive ratio parts make equal subsegments. Seven to seven reduces to one to one.
For AP:PB=6:5AP:PB=6:5AP:PB=6:5, which endpoint receives weight 6 in the weighted-coordinate formula?
Six of the eleven journey parts have been completed from A, so the coefficient of B is six elevenths.
A is (1,−4)(1,-4)(1,−4) and B is (16,6)(16,6)(16,6). Find internal P with AP:PB=2:3AP:PB=2:3AP:PB=2:3.
Move two fifths of each signed coordinate change from A.
For the same internal point P, AP:PB=4:9AP:PB=4:9AP:PB=4:9. What is BP:PABP:PABP:PA?
Starting from B exchanges which subsegment is named first. The lengths do not change.
Which is required for the internal division formula in this lesson?
Distinct endpoints give a nonzero whole segment, and positive parts give a journey fraction strictly between zero and one. Vertical segments and noninteger coordinates are allowed.
Here u and v are the positive ratio parts.
Let A(9,5)A(9,5)A(9,5) and B(−3,−7)B(-3,-7)B(−3,−7). Where is the point three fourths of the way from A toward B?
Both whole changes are -12. Three fourths of each is -9.
Internal P satisfies AP:PB=5:2AP:PB=5:2AP:PB=5:2. Which endpoint is nearer to P?
PB contains two ratio parts while AP contains five. Positive parts mean PB is shorter, so P is nearer B.
An internal point lies four ninths of the way from A toward B. What is AP:PBAP:PBAP:PB?
Four ninths are used and five ninths remain.
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